Written observations of Nicaragua on the admissibility of its counter-claims

Document Number
18742
Document Type
Incidental Proceedings
Date of the Document
Document File
Document

INTERNATIONAL COURT OF JUSTICE

DISPUTE CONCERNING

CERTAIN ACTIVITIES CARRIED OUT BYN ICARAGUA IN THE

BORDER A REA

(COSTA R ICA V. ICARAGUA )

WRITTEN OBSERVATIONS NFICARAGUA ON THE ADMISSIBILITY OF

ITS COUNTECLAIMS

30 ANUARY2013 INTERNATIONAL COURT OF JUSTICE

DISPUTE CONCERNING

CERTAIN ACTIVITIES CARRIED OUT BYN ICARAGUA IN THE

BORDER A REA

(COSTA R ICA V. ICARAGUA )

WRITTEN OBSERVATIONS NFICARAGUA ON THE ADMISSIBILITY OF

ITS COUNTECLAIMS

30 ANUARY2013 CONTENTS

INTRODUCTION................................................................................................... 1

PART I
THE COURT HAS JURISDICTION TO ENTERTAIN NICARAGUA’S
SECOND AND THIRD COUNTER-CLAIMS...................................................... 2

A. THE PACT OF BOGOTÁ........................................................................... 3

B. NICARAGUA’S OPTIONAL DECLARATION........................................ 6

PART II
NICARAGUA’S COUNTER-CLAIMS ARE ADMISSIBLE.............................. 10

A. COSTA RICA’S DISTORTED APPROACH TO THE “DIRECT
FACTUAL CONNECTION” REQUIREMENT....................................... 10

1. Nicaragua’s First Counter-Claim............................................................ 15
2. Nicaragua’s Second Counter-Claim....................................................... 22

3. Nicaragua’s Third Counter-Claim.......................................................... 25

B. COSTA RICA’S DISTORTED APPROACH TO THE “DIRECT
LEGAL CONNECTION” REQUIREMENT ............................................ 28

1. Nicaragua’s First Counter-Claim............................................................ 28

2. Nicaragua’s Second and Third Counter-Claims..................................... 33
PART III

THEJOINDER OFTHE CASES IS APPROPRIATE.......................................... 37
PART IV

SUBMISSIONS .................................................................................................... 42 INTRODUCTION

1. On 30 November 2012, Costa Rica filed its written observations on

the admissibility of Nicaragua’s counter-claims. Costa Rica claims that:

 the first counter-claim (the Consequences of the Construction of a

Road along the San Juan de Nicaragua River) is not admissible, and the joinder

of the case concerning the Construction of a Road in Costa Rica along the San

Juan River (Nicaragua v. Costa Rica) with the present case is not appropriate; 2

and

 the Court has no jurisdiction to entertain the second and third

counter-claims (the Consequences of the Current Non-Existence of the Bay of San

Juan del Norte, and the Right of Nicaraguan Vessels to Reach the Ocean via the

3
Colorado River, respectively), and that these two counter-claims are

inadmissible. 4

2. However, Nicaragua must note two important points. First, Costa

Rica does not challenge the fact that Nicaragua’s counter-claims are clearly

1
Written observations of Costa Rica on the admissibility of Nicaragua’s counter-claims, p. 4, para.
2.3 (hereinafter “CRWO”).
3CRWO, paras. 2.3 and 2.30-2.33.
4CRWO, p. 4, para. 1.3.
Ibid.

1 5
“distinguishable from a defence on the merits,” and it must therefore be deemed

as having accepted that they are distinguishable. 6 Second, “Costa Rica accepts

that the fourth counter-claim, related to purported breaches of the Court’s Order

indicating Provisional Measures of 8 March 2011, is admissible.” 7

3. Therefore, Nicaragua must only show that: (I) the Court has

jurisdiction to entertain Nicaragua’s second and third counter-claims; and (II)

Nicaragua’s first three counter-claims are admissible. Nicaragua will also

demonstrate that (III) far from showing that the joinder of the present case with

the case introduced by Nicaragua concerning the Construction of a Road in Costa

Rica along the San Juan River is inappropriate, the Written Observations of Costa

Rica themselves show that joinder is highly appropriate.

PART I

THE COURT HAS JURISDICTION TO ENTERTAIN
NICARAGUA’S SECOND AND THIRD COUNTER-CLAIMS

1.1 Costa Rica challenges the jurisdiction of the Court to examine

Nicaragua’s second and third counter-claims. Costa Rica claims that these two

counter-claims are outside the temporal scope of the provisions on the settlement

5
I.C.J., Order, 17 December 1997, Application of the Convention on the Prevention and
Punishment of the Crime of Genocide, Counter-claims, I.C.J. Reports 1997, p. 256, para. 27. See
also Order, 29 November 2001, Armed Activities on the Territory of the Congo (Democratic
Republic of the Congo v. Uganda), I.C.J. Reports 2001, pp. 676-677, para. 29 and Order, 6 July
2010, Jurisdictional Immunities of the State (Germany v. Italy), Counter-Claim, I.C.J. Reports
2010, p. 315, para. 13.
6See NCM, pp. 447-449, paras. 9.65-9.70.
7CRWO, p. 4, para. 1.4.

2of disputes contained in the Pact of Bogotá and Nicaragua’s declaration under

Article 36 (2) of the Statute of the Court and the reservation thereto of 23 October

2001. In particular, Costa Rica asserts:

While Nicaragua has accepted the jurisdiction of the Court to
decide the merits of the case submitted by Costa Rica, Nicaragua
has not shown how its counter-claims meet the criteria set out in
the Pact of Bogotá, and/or Article 36 (2) of the Statute of the Court
for their admissibility. An application of the criteria set out in
these instruments precludes examination by the Court of the

second and t8ird of Nicaragua’s counter-claims as a matter of
jurisdiction.

A. THE PACT OF BOGOTÁ

1.2 Article VI of the Pact of Bogotá precludes the Court from settling

de novo “matters … which are governed by agreements or treaties in force on the

date of the conclusion of the present Treaty” (i.e., 30 April 1948). However, it

does not prevent the Court from applying or interpreting a treaty, whatever the

date of its entry into force.

1.3 Article XXXI is worded in clear terms and reads as follows:

In conformity with Article 36, paragraph 2, of the Statute of the

International Court of Justice, the High Contracting Parties declare
that they recognize, in relation to any other American State, the
jurisdiction of the Court as compulsory ipso facto, without the
necessity of any special agreement so long as the present Treaty is
in force, in all disputes of a juridical nature that arise among them
concerning:

a) The interpretation of a treaty ….

8
CRWO, p. 17, para. 3.2.

3 1.4 The present dispute may usefully be compared with the case

concerning the Territorial and Maritime Dispute (Nicaragua v. Colombia), in

which the Court considered that:

[I]t is clear on the face of the text of Article I that the matter of
sovereignty over the islands of San Andrés, Providencia and Santa
Catalina has been settled by the 1928 Treaty within the meaning of
Article VI of the Pact of Bogotá. In the Court’s view there is no

need to go further into the interpretation of the Treaty to reach that
conclusion and there is nothing relating to this issue that could be
ascertained only on the merits. 9

A contrario, this shows that had there been a need to “go further into the

interpretation” of the 1928 Treaty between Colombia and Nicaragua, the Court

would have decided that it had jurisdiction to do so notwithstanding Article VI of

the Pact of Bogotá.

1.5 And, when called to interpret “agreements or treaties in force on

the date of the conclusion” of the Pact of Bogotá, the Court has never hesitated

to do so. Thus, in the case concerning the Dispute regarding Navigational and

Related Rights, it noted:

The 1858 Treaty of Limits completely defines the rules applicable

to the section of the San Juan River that is in dispute in respect of
navigation. Interpreted in the light of the other treaty provisions in
force between the Parties, and in accordance with the arbitral or
judicial decisions rendered on it, that Treaty is sufficient to settle

9I.C.J., Judgment, 13 December 2007, Territorial and Maritime Dispute (Nicaragua v. Colombia),
I.C.J. Reports 2007, p. 861, para. 88.
10See Article VI of the Pact.

4 the question of the extent of Costa Rica’s right of free navigation
which is now before the Court. 11

12
Before giving its interpretation of the 1858 Treaty of Limits, the Court added:

In the first place, it is for the Court to interpret the provisions of a

treaty in the present case. It will do so in terms of customary
international law on the subject, as reflected in Articles 31 and 32
of the 1969 Vienna Convention on the Law of Treaties, as the

Court has stated on several occasions (see Application of the
Convention on the Prevention and Punishment of the Crime of
Genocide (Bosnia and Herzegovina v. Serbia and Montenegro),

Judgment, I.C.J. Reports 2007 (I), pp. 109-110, para. 160; see also
Territorial Dispute (Libyan Arab Jamahiriya/ Chad), Judgment,
I.C.J. Reports 1994, pp. 21-22, para. 41.) 13

1.6 In the present case, Nicaragua does not seek to challenge what was

agreed between the Parties in the 1858 Treaty of Limits, but, on the contrary, asks

the Court to apply and interpret the Parties’ agreement in Articles IV and V of4 15

the 1858 Treaty of Limits. Furthermore, Costa Rica’s Application and Memorial

are based on similar facts and law as invoked by Nicaragua in its Counter Claims

as indicated below 16 and Nicaragua has not opposed the jurisdiction of the Court

to entertain these claims on the basis of the Pact of Bogotá.

11
I.C.J., Judgment, 13 July 2009, Dispute regarding Navigational and Related Rights (Costa Rica
12 Nicaragua), I.C.J. Reports 2009, p. 233, para. 36.
I.C.J., Judgment, 13 July 2009, Dispute regarding Navigational and Related Rights (Costa Rica
v. Nicaragua), I.C.J. Reports 2009, pp. 232-248 paras. 30-84.
13Ibid., p. 237, para. 47. See also I.C.J., Judgment, 19 November 2012, Territorial and Maritime
Dispute (Nicaragua v. Colombia), paras. 40-56.
14NCM, pp. 425-437, paras. 9.34-9.41.
15
16Ibid., pp. 438-439, paras. 9.42-9.45.
See paras. 2.14-2.16. See also paras. 2.23 and 2.41.

5 B. NICARAGUA’S OPTIONAL DECLARATION

1.7 Costa Rica also objects to the Court’s jurisdiction by invoking

Nicaragua’s reservation to its Declaration under Article 36, paragraph 2, of the

Statute, according to which:

Nicaragua will not accept the jurisdiction or competence of the
International Court of Justice in relation to any matter or claim
based on interpretations of treaties or arbitral awards that were
signed and ratified or made, respectively, prior to 31 December
1901.

1.8 There is no need to discuss this objection in depth: as shown above,

the Court has jurisdiction to decide Nicaragua’s counter-claims on the basis of

Article XXXI of the Pact of Bogotá; this is a clear and sufficient basis for its

competence. Therefore, even if Nicaragua’s reservation could be interpreted as

excluding the Court’s jurisdiction to entertain an examination of Nicaragua’s

second and third counter-claims, the Court could nevertheless decide on the basis

of the Pact.

1.9 This is made clear by the position taken by the Court in its 1988

Judgment on the preliminary objections in the case concerning Border and

Transborder Armed Actions between Nicaragua and Honduras. In that case,

Nicaragua invoked two distinct titles of jurisdiction – as does Costa Rica in the

present case : Article XXXI of the Pact of Bogotá on the one hand, and “the

17
Application of the Republic of Costa Rica instituting proceedings, 18 November 2010, pp. 2-3,
para. 3.
6declarations of acceptance of compulsory jurisdiction made by Nicaragua and

Honduras under Article 36 of the Statute” on the other hand. “Since, in relations

between the States parties to the Pact of Bogota, that Pact is governing, the Court

[examined] first the question whether it has jurisdiction under Article XXXI of the

Pact,” concluding:

Article XXXI of the Pact of Bogota … confers jurisdiction upon

the Court to entertain the dispute submitted to it. For that reason,
the Court does not need to consider whether it might have
jurisdiction by virtue of the declarations of acceptance of

compulsory jurisdiction by Nic20agua and Honduras set out in
paragraphs 23 to 25 above.

Similarly, in Hissène Habré, the Court concluded that:

Given that the conditions set out in Article 30, paragraph 1, of the
Convention against Torture have been met … [the Court] has

jurisdiction to entertain the dispute between the Parties concerning
the interpretation and application of Article 6, paragraph 2, and
Article 7, paragraph 1, of the Convention.

Having reached this conclusion, the Court does not find it
necessary to consider whether its jurisdiction also exists with
regard to the same dispute on the basis of the declarations made by
21
the Parties under Article 36, paragraph 2, of its Statute.

The same holds true in the present case: there is no reason to differentiate the

reasoning applying to the jurisdiction of the Court in relation to counter-claims

18
I.C.J., Judgment, 20 December 1988, Border and Transborder Armed Actions (Nicaragua v.
19nduras), Jurisdiction and Admissibility, I.C.J. Reports 1988, p. 82, para. 26.
20Ibid. p. 82, para. 27.
Ibid., p. 90, para. 48.
21I.C.J., Judgment, 20 July 2012, Questions relating to the Obligation to Prosecute or Extradite
(Belgium v. Senegal), para. 63

7from the reasoning it applied to acknowledge its jurisdiction over the Application

itself.

1.10 Regardless, Costa Rica’s objection is untenable in the present case.

1.11 As is made clear by the inclusion of Article 80, in Section D of Part

III of the Rules of Court, counter-claims are “Incidental Proceedings”. And, as

the Court noted in its Judgment of 13 September 1990 concerning Nicaragua’s

Application to Intervene in the Land, Island and Maritime Frontier Dispute

between El Salvador and Honduras: “Incidental proceedings by definition must be

those which are incidental to a case which is already before the Court or

22
Chamber.”

1.12 In the present case, Costa Rica has interpreted Nicaragua’s

declaration as a title for the jurisdiction of the Court, which it expressly invokes

23
both in its Application and in its Memorial:

3. The Court has jurisdiction over the present dispute by virtue of:

22 I.C.J., Judgment, 13 September 1990, Land, Island and Maritime Frontier Dispute (El
Salvador/Honduras), Application to Intervene, I.C.J. Reports 1990, p. 134, para. 98. See also
I.C.J., Order, 17 December 1997, Application of the Convention on the Prevention and
Punishment of the Crime of Genocide, Counter-claims, I.C.J. Reports 1997, p. 257, para. 30:

23ncidental proceedings, that is to say, within the context of a case which is already in progress”.
Application of the Republic of Costa Rica instituting proceedings, pp. 1-3, para. 3 (“The Court
has jurisdiction over the present dispute by virtue of: … (b) the operation of the declarations of
acceptance made respectively by the Republic of Costa Rica dated 20 February 1973, and by the
Republic of Nicaragua dated 24 September 1929 (as modified 23 October 2001), pursuant to
Article 36(2) of the Statute of the Court.”).

8 (b) the operation of the declarations of acceptance made
respectively by the Republic of Costa Rica dated 20 February
1973, and by the Republic of Nicaragua dated 24 September 1929

(as modified 23 Octo”er 2001), pursuant to Article 36(2) of the
Statute of the Court.

The Court has jurisdiction over the present dispute in accordance
with the provisions of article 36, paragraph 2, of its Statute, by

virtue of the operation of the following:

The declarations of acceptance made respectively by the Republic
of Costa Rica dated 20 February 1973, and by the Republic of

Nicaragua dated 24 September 1929), pursuant to Article 36(2) of
the Statute of the Court”.

1.13 Having based its claim for jurisdiction in this case on the optional

declarations made by both Parties, it is now impossible for Costa Rica to reject

this same jurisdiction to rule on the counter-claims. This is all the more evident

given that, in its Application, Costa Rica expressly noted that Nicaragua’s

declaration had been modified on 23 October 2001. 24 This fact did not prevent

the Claimant from considering said declaration as establishing the jurisdiction of

the Court in the present case; it cannot now be heard to argue that the Court lacks

jurisdiction over Nicaragua’s counter-claims regarding facts of the same kind.

1.14 There can therefore be no doubt that the Court has jurisdiction over

Nicaragua’s second and third counter-claims on the same two titles of jurisdiction

invoked by Costa Rica in the present case. However, if one of these titles were

24
Application of the Republic of Costa Rica instituting proceedings, 18 November 2010, para. 3, b.
9found to be inapplicable – quod non – the Court’s jurisdiction still would be

established on the basis of the other.

PART II

NICARAGUA’S COUNTER-CLAIMS ARE ADMISSIBLE

2.1 In its written observations, Costa Rica argues that “the first three

counter-claims are inadmissible. All three fail to meet the requirement of direct

connection with the Claimant’s claims in this case, as required by Article 80,

paragraph 1 of the Rules of the Court.As Nicaragua will demonstrate below,

Costa Rica mischaracterizes both the facts and the legal requirements of Article

80, especially the “direct connection” condition: all three counter-claims are

directly connected both (A) factually and (B) legally with the case brought by

Costa Rica.

A. COSTA RICA’S DISTORTED APPROACH TO THE
“DIRECT FACTUAL CONNECTION” REQUIREMENT

2.2 Basing itself on the Order of the Court of 17 December 1997 in the

Genocide case, Costa Rica contends that:

To satisfy the requirement in Article 80(1) of the Rules that the
counter-claim is “directly connected with the subject-matter” of the
principal claim, there must be a direct factual connection between
the counter-claim and the principal claim. This requirement is

satisfied if the counter-claim:

(a) relates to facts of the same kind, and

25
CRWO, p. 4, para. 1.3.

10 (b) forms part of the same factual complex, in that it relates
to facts that occurred in the same territory during the
26
same time period and concerned the same events.

27
2.3 As shown below Nicaragua’s counter Claims match this criteria,

but it might be recalled that, in that case, the Court noted that the parties’

submissions had revealed “that their respective claims rest on facts of the same

nature; … they form part of the same factual complex since al1 those facts are

alleged to have occurred on the territory of Bosnia and Herzegovina and during

28
the same period.” But Costa Rica conspicuously omits relevant words from the

previous paragraph of that same Order, in which the Court emphasises that:

[T]he Rules of Court do not define what is meant by … “directly
connected”; … it is for the Court, in its sole discretion, to assess
whether the counter-claim is sufficiently connected to the principal

claim, taking account of the particular aspects of each case; and …
as a general rule, the degree of connection between the claims must
be assessed both in fact and in law. 29

2.4 In other words, the connection between the principal claim and the

counter-claim must be assessed in each case in light of the special circumstances

of the case. This is the general rule. The precise circumstances on which the

Court based its findings in the Genocide case must not necessarily be present in

26CRWO, p. 5, para. 1.6 – footnotes omitted.
27See paras. 2.17-2.20, 2.23
28 I.C.J., Order, 17 December 1997, Application of the Convention on the Prevention and
Punishment of the Crime of Genocide, Counter-claims, I.C.J. Reports 1997, p. 258, para. 34 –

29phasis added.
Ibid., para. 33 – emphasis added. See also I.C.J., Order, 10 March 1998, Oil Platforms (Islamic
Republic of Iran v. United States of America), Counter-Claim, I.C.J. Reports 1998, pp. 204-205,
para. 37; I.C.J., Order, 29 November 2001, Armed Activities on the Territory of the Congo
(Democratic Republic of the Congo v. Uganda), I.C.J. Reports 2001, p. 678, para. 36.

11all other cases for establishing the admissibility of counter-claims. As noted by

President Guillaume,

Au total, la Cour a compétence liée pour admettre une demande
reconventionnelle si les conditions fixées par l’article 80 sont

remplies, mais elle dispose 30 d’une grande liberté dans
l’appréciation de ces conditions.

2.5 And, contrary to what Costa Rica suggests, the Court has

frequently exercised “large freedom of appreciation” on the matter.

2.6 In its Written Observations, Costa Rica presents the factual

requirements for the admissibility of counter-claims in a misleading manner. It

adds a condition to Article 80(1) of the Rules of Court and interprets too

restrictively the Court’s case law.

2.7 In particular, Costa Rica seems to argue that, to be considered

admissible, a counter-claim must be based on the same facts on which the

Applicant’s main claim rests. According to Costa Rica, counter-claims must

“concern the same events” 31 or be “directly dependent on the facts of the main

32
action.” A review of the Court’s case law shows that the Court’s approach is

much more nuanced.

30Exposé de G. Guillaume in J.-M. Sorel et F. Poirat eds., Les procédures incidentes devant la
Cour internationale de Justice : exercice ou abus de droits?, Pedone Paris, 1001, p. 99.
31CRWO, pp. 5-6, para. 1.6.
32See CRWO, p. 11, para. 2.17 quoting Judge Fromageot (Acts and Documents Concerning the
Organization of the Court, Third Addendum to No. 2, Elaboration of the Rules of Court of March
11th, 1936, Thirty-second Session, Fourteenth Meeting (May 29th, 1934), P.C.I.J. Series D, p.
112).

12 2.8 A comparison between the findings of the Court in the Genocide

case and Cameroon v. Nigeria is particularly telling. In the latter case, even

assuming that Nigeria’s counter-claims on responsibility could be considered to

be connected with Cameroon’s main claim, it is clear that Cameroon’s claims and

Nigeria’s counter-claims relating to international responsibility did not concern

the same events. The incidents invoked by the parties were of differing nature

and did not occur in either the same place or at the same time. The Court found,

nonetheless, that the Nigeria’s counter-claims were “directly connected with the

subject-matter of the claim[s] of the other [Party],” as required by Article 80,

paragraph 1, of the Rules of the Court. 33

2.9 Similarly, in the Oil Platforms case, the United States’ counter-

34
claims were also not “directly dependent on the facts of the main action.” In

particular, the facts on which the United States’ counter-claims were based

occurred before “the facts of the main action” and were clearly different in

35
nature.

33I.C.J., Order 30 June 1999, Land and Maritime Boundary between Cameroon and Nigeria, I.C.J.

34ports 1999, pp. 985-986.
Acts and Documents Concerning the Organization of the Court, Third Addendum to No. 2,
Elaboration of the Rules of Court of March 11th, 1936, Thirty-second Session, Fourteenth Meeting
(May 29th, 1934), P.C.I.J. Series D, p. 112. See also CRWO, p. 11, para. 2.17.
35Comp. paras 1 (attack and destruction of three offshore oil production complexes, owned and
operated for commercial purposes by the National Iranian Oil Company, by several warships of
the United States Navy on 19 October 1987 and 18 April 1988, respectively”) and 4 (“laying
mines in the Gulf and otherwise engaging in military actions in 1987-1988 that were dangerous

and detrimental to maritime commerce”) of the ICJ’s Order, 10 March 1998, Oil Platforms
(Islamic Republic of Iran v. United States of America), Counter-Claim, I.C.J. Reports 1998, pp.
190-191, para. 1.

13 2.10 The Court’s case law regarding the interpretation of the “direct

factual connection” condition establishes two main points.

2.11 First, three criteria may be examined by the Court in order to

determine whether the different events are part of the same factual complex:

1. The facts invoked in support of the claims and the counter-

claims must be of a similar nature;

2. These facts must have occurred in the same area; and

3. These facts must have occurred during the same time period.

Costa Rica refers to these three criteria but applies them in a very restrictive and

rigid way, one that has never been upheld by the Court, which enjoys a large

margin of appreciation in that matter.

2.12 Second, contrary to what Costa Rica argues, in exercising its

discretionary power, the Court may apply these guidelines freely, without

requiring them to be cumulative. For instance, in the Armed Activities case, the

Court only took into account the identical nature of the facts on which the DRC’s

36
claim and Uganda’s second counter-claim were based. Similarly, regarding

Uganda’s first counter-claim, 37 and in the Cameroon v. Nigeria case, 38the Court

ignored a lack of temporal connection between the claims and counter-claims.

36I.C.J., Order, 29 November 2001, Armed Activities on the Territory of the Congo (Democratic
Republic of the Congo v. Uganda), I.C.J. Reports 2001, p. 679, para. 40.
37I.C.J., Order, 29 November 2001, Armed Activities on the Territory of the Congo (Democratic
Republic of the Congo v. Uganda), I.C.J. Reports 2001, pp. 678-679, para. 38.
38I.C.J., Order 30 June 1999, Land and Maritime Boundary between Cameroon and Nigeria, I.C.J.
Reports 1999, pp. 985-986. See also para. 2.18 below.

14 1. Nicaragua’s First Counter-Claim

2.13 In any event, were the Court ready to accept Costa Rica’s

restrictive interpretation of Article 80(1) of the Rules, Nicaragua’s first counter-

claim would no doubt be admissible as it does meet all three of the criteria that

Costa Rica alleges are cumulative:

1. It rests on facts of the same nature as those underlying some of

Costa Rica’s claims;

2. These facts occurred in the same area; and

3. They occurred in the same period of time.

2.14 Nicaragua’s first counter-claim, as expressed in the Submissions of

the Counter-Memorial, reads as follows:

(3) Costa Rica bears responsibility to Nicaragua-for the
construction of a road along the San Juan de Nicaragua River in
violation of Costa Rica’s obligations stemming from the 1858
Treaty of Limits and various treaty or customary rules relating to
39
the protection of the environment and good neighbourliness.

As summarized in paragraph 9.29 of Nicaragua’s Counter-Memorial, this

submission is founded, e.g., on the following facts:

Much harm has been observed, including:

• The dumping of trees, debris, and sediments into the San
Juan River, making navigation more difficult and more
dangerous; [and]

39
NCM, p. 456; see also, p. 417, para. 9.7.

15 • The destruction of the vegetation and disturbance of fragile

soils along the right bank of the river, resulting in
increased erosion and sedimentation in the River.

2.15 First, these facts are certainly “of the same nature” as those alleged

by Costa Rica in this case. Indeed, the “Dumping of Sediments”, “Felling of

Trees” and “Removal of Soil and Destruction of Undergrowth” are precisely the

three first headings of the environmental damage Costa Rica complains of in its

Memorial. 40 Both Costa Rica and Nicaragua argue that these acts amount to a

41
violation of their territorial integrity and of their respective environmental

42 43
obligations, and that they could affect the San Juan River.

44
2.16 Second, contrary to Costa Rica’s allegations, the facts in question

occurred in the same area, i.e., along or in the San Juan River or its immediate

vicinity. As Costa Rica itself describes these facts, “Nicaragua’s actions that form

the object of the present case are located in the northern part of Isla Portillos

(Costa Rica) and in the eastern sector of the San Juan River, whose waters are on

45
Nicaraguan territory.” The fact that part of Costa Rica’s claims concern only the

40
See CRM, pp. 226-236, paras. 5.63-5.79. See also Application Instituting Proceedings, 18
November 2010, para. 4, and CRM, p. 23, para. 1.9; p. 69, para. 3.2; p. 121, para. 3.104; or pp.
129-130, paras. 3.111-3.115.
41As for Costa Rica, see, e.g., Application instituting proceedings, 18 November 2010, p. 3, paras.

4-5 or CRM, p. 23, para. 1.9, p. 69, para. 3.2, pp. 298-299, paras. 7.4-7.5. As for Nicaragua see,
42g., NCM, pp. 428-429, para. 9.25 and pp. 433-434, par. 9.31.
As for Costa Rica, see CRM, Chapter V (Nicaragua’s breaches of the environmental protection
regime). As for Nicaragua, see NCM, pp. 420-424, paras. 9.13-9.19, pp. 429-434, paras. 9.26-9.31
and p. 456.
43As for Costa Rica, see CRM, p. 248, para. 5.98. As for Nicaragua, see NCM, p. 429, para. 9.26.
44CRWO, p. 13, paras. 2.21-2.22.
45
Ibid., para. 2.22.

16northern part of Isla Portillos is irrelevant. The Court has never required an

identity of location. For instance, in the Armed Activities case, events relied on by

the Democratic Republic of Congo happened in two specific regions of the DRC,

Kitona in the Bas Congo province and in the east of the DRC. The facts invoked

by Uganda “occurred in well-defined and clearly different geographic areas,” 46

i.e., in Uganda (first counter-claim) and in Kinshasa (second counter-claim),

which is located 500 kilometres away from Kitona and more than 1,000

kilometres away from the eastern regions of the DRC. These two counter-claims

47
were nonetheless considered admissible by the Court.

2.17 The important element is not that the facts invoked by the Parties

took place at the exact same location, but that they are all related to the same

geographical feature, in the present case the San Juan River, which Costa Rica has

acknowledged:

 Regarding its own claims, Costa Rica has said that “[t]he facts

underlying the present dispute are as follows. Nicaragua has, in two separate

incidents, occupied the territory of Costa Rica in connection with the construction

of a canal across Costa Rican territory from the San Juan River to Laguna los

46Ibid.
47I.C.J., Order, 29 November 2001, Armed Activities on the Territory of the Congo (Democratic
Republic of the Congo v. Uganda), I.C.J. Reports 2001, pp. 678-679, paras. 38 and 40.

17Portillos (also known as Harbor Head Lagoon), and certain related works of

48
dredging on the San Juan River.”

 Regarding Nicaragua’s counter-claims, Costa Rica has said that

“[t]he two basic issues in the present case are the questions of sovereignty in the

area in and around the mouth of the San Juan River and the questions relating to

the right of Nicaragua to maintain and improve the navigation of the San Juan de

49
Nicaragua River.”

2.18 Finally, the facts alleged by both Parties also occurred in the same

time period. It is not enough for Costa Rica to say that “[t]he facts that Nicaragua

invokes in its counter-claim occurred one year after Costa Rica filed its

50
application.” As the Court’s case law reflects, Article 80(1) of the Rules of the

Court does not require that the facts occur within the same week or month. In the

Oil Platform case, the facts invoked by Iran and those invoked by the United

51
States occurred within a two-year period. The Cameroon v. Nigeria case is even

more telling. In that case, the incidents referred to the Court by Cameroon

happened between 1981 and 2004, 52 whereas some of the incidents raised by

Nigeria occurred in 1970 and 1976. Nigeria’s counter-claims were nonetheless

considered admissible by the Court.

48Application Instituting Proceedings, p. 3, para. 4.
49NCM, p. 4, para. 1.9.
50CRWO, p. 12, para. 2.19.
51See para. 2.21 below.
52
53See, e.g., Memorial of Cameroon, p. 563, paras. 6.03-6.04.
See Counter-Memorial of Nigeria, pp. 822-823, para. 25.68.

18 2.19 In the present case, Costa Rica’s Emergency Decree 36440-MP

authorizing the construction of Road 1856 is dated 7 March 2011, and the works

officially began in the following month, much less than one year after Costa

55
Rica’s Application of 18 November 2010. Moreover, as explained below and in

Nicaragua’s Memorial in the case concerning the Construction of a Road in Costa

56
Rica along the San Juan River, the construction of the Road (and the adoption of

the Decree) were retaliatory measures adopted in response to Nicaragua’s alleged

“incursions,” allegations which are the very basis of the present case.

2.20 Clearly, “in the present case, it emerges from the Parties’

submissions that their respective claims rest on facts of the same nature” and that

“they form part of the same factual complex,” 57 as all of the facts on which the

Parties have based their claims and counter-claims:

1. Are of the “same nature”;

2. Have occurred in relation with the same geographical feature;

and

3. Have occurred during the same period of time.

2.21 It must also be noted that, in order to assess the existence of this

“factual complex” criterion, the Court takes into account the relationship between

54
55Ibid., p. 805, para. 25.9.
56See paras. 2.232-2.25 below.
57See pp. 19-30, paras. 2.15-2.26.
I.C.J., Order, 17 December 1997, Application of the Convention on the Prevention and
Punishment of the Crime of Genocide, Counter-claims, I.C.J. Reports 1997, p. 258, para. 34 – see
above para. 2.3.

19the events relied upon by the parties, such as a causal relationship. For instance,

in the Oil Platforms case, Iran’s claim and the United States’ counter-claim had

such a direct causal connection: the United States claimed that the facts on which

its counter-claim rested were the cause of its attacks on Iran’s oil platforms. In

that case, the two series of events happened consecutively in 1987 and 1988.

Similarly, in the case concerning Armed Activities on the Territory of the Congo

(DRC v. Uganda), the Court noted that:

[W]hile Uganda’s counter-claim ranges over a longer period than
that covered by the Congo’s principal claim, both claims

nonetheless concern a conflict in existence between the two
neighbouring States, in various forms and of variable intensity,
since 1994.58

2.22 Costa Rica’s internationally wrongful acts, of which Nicaragua

complains in its first counter-claim, are expressly a retaliation for Nicaragua’s

alleged wrongful acts as presented in Costa Rica’s Application and Memorial in

this case.

2.23 Costa Rica itself acknowledges the direct causal connection

between Nicaragua’s first counter-claim and its own claims. In its Written

Observations, Costa Rica explains: “The road was built within the framework of

Emergency Decree 36440-MP, and the Emergency Decree itself is a consequence

59
of Nicaragua’s invasion and occupation of Costa Rica specifically.” According

58I.C.J., Order, 29 November 2001, Armed Activities on the Territory of the Congo (Democratic
Republic of the Congo v. Uganda), I.C.J. Reports 2001, pp. 678-679, para. 38.
59CRWO, p. 12, para. 2.20.

20to Costa Rica, this alleged invasion constitutes “the main facts of the principal

case” 60 and was partly caused by the execution of Nicaragua’s dredging

61
programme. And, as in the Oil Platforms case, the facts relied on by Costa Rica

and Nicaragua occurred consecutively in a similar time period, i.e., in 2010 and

2011-2012.

2.24 The direct causal connection between Costa Rica’s claims and

Nicaragua’s first counter-claim is undisputable.

2.25 Probably conscious that it lacks arguments on the admissibility of

Nicaragua’s first counter-claim, Costa Rica seeks to persuade the Court that it

should not be considered admissible because of an alleged lack of substantial

62
foundation. By discussing the soundness of Nicaragua’s first counter-claim,

Costa Rica puts the cart before the horse. At the present stage, the Parties are

asked to present their observations on the admissibility of Nicaragua’s counter-

claims, not on the merits of those counter-claims, as such arguments are irrelevant

to the issue of the admissibility of counter-claims. Nicaragua cannot but agree

with Costa Rica when it finally acknowledges that “[i]t is true that the Court

cannot at this stage, facing a claim of this nature, determine whether it is

60
61Ibid., p. 11, para. 2.17.
See, e.g., Application Instituting Proceedings, 18 November 2010, Certain Activities Carried
out by Nicaragua in the Border Area (Costa Rica v. Nicaragua), p. 3, paras. 4-5 and CRM, p. 23,
para. 1.9 and p. 69, para. 3.2.
62CRWO, pp. 14-15, paras. 2.26-2.28.

21 63
sustainable on the merits.” Nicaragua will therefore only deal with these grossly

misconceived arguments very briefly.

2.26 Suffice it to say in this respect that, while Costa Rica asserts that

“[e]ven assuming that the alleged Costa Rican construction of the road might be

an international wrongful act (quod non), it cannot be invoked as a breach of the

Treaty of Limits.” 64 As explained above, both Costa Rica and Nicaragua claim

that the other Party dumped sediments and trees on their territory and that these

acts constitute a violation of their territorial integrity and amount to an

occupation, which imply a violation of the land boundary as established in Article

II of the 1858 Treaty of Limits.

2. Nicaragua’s Second Counter-Claim

2.27 Nicaragua’s second counter-claim is based on the current non-

existence of the Bay of San Juan del Norte. This is why Nicaragua asks the Court

to declare that “Nicaragua has become the sole sovereign over the area formerly

65
occupied by the Bay of San Juan del Norte.”

2.28 Costa Rica’s assertion that “in the Certain Activities case Costa

Rica makes no claim to the Bay and indeed does not refer to the Bay in the

63Ibid., pp. 14-15, para. 2.26.
64CRWO, p. 14-15, para. 2.26.
65NCM, p. 456; see also, p. 16, para. 1.29 or p. 437, para. 9.41.

22operative part of its submissions” is not an argument: clearly, counter-claims do

not need to respond directly to a claim, which would make them defences, not

67
counter-claims.

2.29 And, even if Costa Rica’s Submissions do not mention the Bay of

San Juan del Norte, its status, as fixed by the 1858 Treaty of Limits, is

indisputably part of the case submitted by Costa Rica to the Court. Paragraph 1 of

Costa Rica’s Application includes among the obligations allegedly breached by

Nicaragua “the Treaty of Territorial Limits between Costa Rica and Nicaragua of

15 April 1858 (the Treaty of Limits)” and, in particular, Article V, which it

describes as a “transitional provision” relating to the regime applicable to the port

68
of San Juan del Norte. Paragraph 1.1 of the Memorial proceeds likewise.

69 70
2.30 Factually, despite Costa Rica’s attempt to show otherwise, it is

clear that Nicaragua’s second counter-claim does form part of the same “factual

complex”. It bears upon a geographical aspect which is part of Costa Rica’s own

71
description of the “geographical background” of the case. More importantly, the

need of the dredging begun by Nicaragua, which is one of the main elements of

Costa Rica’s case, 72 is closely and directly connected with the drying out of the

66
CRWO, p. 20, para. 4.1.
67See para. 2, and note 5 above.
68See Application Instituting Proceedings, p. 7, para. 11.
69For the legal connection, see para. 2.39-2.456 below.
70CRWO, p. 20, para. 4.2.
71
72CRM, p. 34, para. 2.3; see also p. 48, note 85.
See, e.g., paras. 1 (e) and 2 (b) and (c) of the Costa Rican Submissions.

23 73
Bay and the dispute on the factual situation in the general area of the mouth of

the River. As indicated in Nicaragua’s Counter Memorial, the situation of the

former Bay of San Juan “is part of the issues of sovereignty at the mouth of the

74
San Juan River which lies at the heart of the present case.”

2.31 The direct connection of the question of the situation of the Bay of

San Juan was pointed out and emphasized during the public hearings in this case

on the request by Costa Rica for provisional measures. The Agent stated: “Other

very important issues stemming from the 1858 Treaty are still in dispute between

the Parties and involve, for example, the situations of the Bays of San Juan and

Salinas.” 75

2.32 In addition, the following passage from the Court’s Order on

Interim Measures of 8 March 2011 demonstrates that, when the dispute arose,

Costa Rica agreed that the status of the Bay of San Juan del Norte was part of the

dispute submitted to the Court:

Whereas Costa Rica declared that it is not opposed to Nicaragua

carrying out works to clean the San Juan river, provided that these
works do not affect Costa Rica’s territory, including the Colorado
river, or its navigation rights on the San Juan river, or its rights in

the Bay of San Juan del Norte; whereas Costa Rica asserted that
the dredging works carried out by Nicaragua on the San Juan river
did not comply with these conditions, firstly because Nicaragua has
deposited large amounts of sediment from the river in the Costa

73
74See NCM, p. 452, paras 9.79-9.81.
NCM, p. 452, par. 9.81.
7CR 2011/4, 13 January 2011 at 4:30 p.m. available at http://www.icj-
cij.org/docket/index.php?p1=3&p2=1&k=ec&case=150&code=crn&p3=2

24 Rican territory it is occupying and has proceeded to deforest
certain areas; secondly, because these works, and those relating to
the cutting of the disputed canal, have as a consequence the

significant deviation of the waters of the Colorado river, which is
situated entirely in Costa Rican territory; and, thirdly, because
these dredging works will spoil portions of Costa Rica’s northern
coast on the Caribbean Sea. 76

3. Nicaragua’s Third Counter-Claim

2.33 Nicaragua’s third counter-claim relates to the right of Nicaraguan

vessels to reach the ocean via the Colorado River. 77 This counter-claim is also

tightly linked to Costa Rica’s claims concerning Nicaragua’s dredging activities

on the San Juan River. 78 It appears in the Submissions in the Counter-Memorial

as follows:

Nicaragua requests a declaration by the Court that: … (2)
Nicaragua has a right to free navigation on the Colorado Branch of
the San Juan de Nicaragua River until the conditions of

navigability existing at the time the 1858 Treaty was concluded are
re-established.79

2.34 During the public hearings on provisional measures, Nicaragua

pointed out that President Ortega had announced on 2 November 2010 (that is,

shortly before Costa Rica filed its Application instituting this case on 18

November 2010) that “Nicaragua would also claim the right to navigate out to the

Caribbean Sea via the branch of the Colorado river at least until Nicaragua was

76
I.C.J., Order, 8 March 2011, Certain Activities Carried out by Nicaragua in the Border Area
(Costa Rica v. Nicaragua), para. 32 – emphasis added.
77NCM, pp. 438-439, paras. 9.42-9.45.
78See above, para. 2.30, and, in particular note 68.
79NCM, p. 456.

25able to clean the San Juan river from the sedimentation provoked by the Costa

Rican deforestation of its territory and recover the possibility of navigating it out

to sea…”(and further added that Nicaragua was)…“preparing a case against Costa

Rica along the lines announced by President Ortega that involve the real issues

that are at the heart of this dispute.”0

2.35 Nicaragua’s dredging of the Lower San Juan is necessitated by the

fact that the Caribbean Sea can no longer be reached via the San Juan by vessels

of any size, and by even small boats for much of the year. Yet Costa Rica has

requested the Court to curtail Nicaragua’s dredging activities and has prevented

Nicaragua from reaching the sea via the Colorado Branch of the San Juan River. 81

2.36 In its Counter-Memorial Nicaragua has pointed out that the 1858

Treaty contemplates this situation and in effect provides for Nicaraguan

navigation to the sea via the Colorado for so long as this is impossible via the San

Juan. Article 5 of the Treaty provides as follows:

As long as Nicaragua does not recover the full possession of all her
rights in the port of San Juan del Norte, the use and possession of
Punta de Castilla shall be common and equal both for Nicaragua and

Costa Rica; and in the meantime, and as long as this community
lasts, the boundary shall be the whole course of the Colorado river.

80
CR 2011/2, 11 January 2011 at 3 p.m., available at http://www.icj-
cij.org/docket/index.php?p1=3&p2=1&k=ec&case=150&code=crn&p3=2
81NCM, para. 4.66.

26 2.37 Nicaragua’s third counter-claim simply asserts a right flowing from

Article 5, and does so as a consequence of a situation – the non-navigability of the

Lower San Juan and the occlusion of the river’s mouth – which Costa Rica in this

case is attempting to prevent Nicaragua from addressing. The third counter-claim

is thus certainly part of the same factual complex as Costa Rica’s principal claim.

2.38 In its Memorial, Costa Rica describes at length the Colorado River

82
and presents it as part of the geographical background of the case. It further

claims that “Nicaragua’s activities risk causing further significant environmental

harm to Costa Rican territory, and affecting the flow of the Colorado River.” 83

This claim has been acknowledged by the Court in its Order of 8 March 2011 as

“forming part of the subject of the case”:

Whereas the rights claimed by Costa Rica and forming the subject
of the case on the merits are, on the one hand, its right to assert

sovereignty over the entirety of Isla Portillos and over the Colorado
river and, on the other hand, its right to protect the environment in
those areas over which it is sovereign; whereas, however,

Nicaragua contends that it holds the title to sovereignty over the
northern part of Isla Portillos…and whereas Nicaragua argues that
its dredging of the San Juan river, over which it has sovereignty,
has only a negligible impact on the flow of the Colorado river, over
84
which Costa Rica has sovereignty.

82CRM, pp. 33-36, paras. 2.2-2.7. See also Application Instituting Proceedings, p. 10, para. 17.
83Ibid., p. 70, para. 3.5. See also. e.g., pp. 102-103, para. 3.70, p. 104, para. 3.72, pp. 206-207,
para. 5.18, p. 225, para. 5.58 and p. 248, para. 5.98.
84I.C.J., Order, 8 March 2011, Certain Activities Carried out by Nicaragua in the Border Area
(Costa Rica v. Nicaragua), para. 55.

27 B. COSTA RICA’S DISTORTED APPROACH TO THE
“DIRECT LEGAL CONNECTION” REQUIREMENT

1. Nicaragua’s First Counter-Claim

2.39 The 1858 Treaty of Limits on which both Parties rely extensively is

at the very heart of the present case. However, Costa Rica argues that “the

applicable law of Costa Rica’s claim and Nicaragua’s counter-claim are

85
different.” As regards the first counter-claim, Costa Rica explains that “the

alleged Costa Rican construction of the road … cannot be invoked as a breach of

the Treaty of Limits” 86and that “Nicaragua itself recognises that neither the

87
Treaty of Limits nor any other specific treaty governs its new claim.” Costa

Rica’s position calls for the following remarks.

2.40 First, Nicaragua has never recognized that “neither the Treaty of

88
Limits nor any other specific treaty” is applicable to its first counter-claim. On

the contrary, in Chapter 9 of its Counter-Memorial, Nicaragua has demonstrated

that the “dump[ing] into the river of substantial volumes of sediments, soil,

uprooted vegetation and felled trees” caused by the construction of Road 1856

89
“resulted in the invasion of Nicaraguan territory,” which constitutes a violation

of Article VI of the 1858 Treaty of Limits and of the land boundary between the

85
86CRWO, p. 21, para. 4.7.
Ibid., pp. 14-15, para. 2.26.
87Ibid., p. 15, para. 2.27.
88Ibid., p. 15, para. 2.27.
89NCM, pp. 428-429, para. 9.25.

28Parties as established in Article II of that Treaty. 90Nicaragua has further shown

that Costa Rica’s activities directly affected navigation on the San Juan River.

This constitutes a violation of the 1858 Treaty of Limits.

2.41 In the present case, Costa Rica and Nicaragua “pursue, with their

respective claims, the same legal aim, namely the establishment of legal

responsibility for violations of the [1858 Treaty of Limits].” 91 In paragraph 2.25

of its written observations, Costa Rica describes its claims as follows:

In the present case, Costa Rica’s claims are based: first, on the
breach by Nicaragua of the obligation to respect the boundary
established by Article II of the Treaty of Limits of 1858 and by the
first Alexander Award through the occupation, construction of an

artificial channel and its late claim of sovereignty over Costa Rican
territory located at the southern or eastern side of that boundary;
second, on the breach of paragraph 6 of the Third article of the
Cleveland Award relating to the obligation by Nicaragua not to

execute works that “result in the occupation or flooding or damage
of Costa Rica territory, or in the destruction or serious impairment
of the navigation of the said River or any of its branches at any
point where Costa Rica is entitled to navigate the same.” 92

For its part, Nicaragua formulates its claim as follows in its Counter-Memorial;

As explained in Chapter 3, Article VI of the 1858 Treaty
establishes that Nicaragua has sovereignty over the waters of the
San Juan river, the right bank of which constitutes the boundary
between the two States. This fact was reaffirmed by the Court in

its 2009 Judgment. As the Court put it, “[t]he 1858 Treaty of
Limits completely defines the rules applicable to the section of the
San Juan River” relevant to the present case. Apart from the right
of navigation with commercial objects, the 1858 Treaty confers no

90Ibid.
91 I.C.J., Order, 17 December 1997, Application of the Convention on the Prevention and
Punishment of the Crime of Genocide, Counter-claims, I.C.J. Reports 1997, p. 258, para. 35.
92CRWO, p. 14, para. 2.25.

29 other right over the San Juan River to Costa Rica – and certainly
not the right to dump into the river substantial volumes of
sediments, soil, uprooted vegetation and felled trees which resulted
93
in the invasion of Nicaraguan territory.

Indeed these are different claims, but they clearly correspond to each other: both

Parties seek to hold the other Party responsible for breaches of the 1858 Treaty of

Limits. And, as established above, these breaches are closely interrelated in fact.

2.42 Moreover, as Costa Rica recognizes, the 1858 Treaty of Limits

goes beyond merely defining the boundary between the Parties. In its own words,

its claim based on that Treaty bears upon “a breach of an internationally agreed

boundary, the territorial integrity of a State, a right of consultation and the

obligation not to cause harm to the territory of the other State explicitly arising

from the Treaty of Limits and its interpretation by the Cleveland Award.” 94 This

phrase could be used, word-by-word, to describe Nicaragua’s claim. And, in any

case, the absence of total symmetry between the respective claims of the Parties is

“not determinative as regards the assessment of whether there is a legal

connection between the principal claim and the counter-claim in so far the two

Parties pursue, with their respective claims, the same legal aim, namely the

95
establishment of legal responsibility for violations of” the 1858 Treaty of Limits.

93
94NCM, pp. 428-429, para. 9.25.
95CRWO, p. 15, para. 2.26.
See I.C.J., Order, 17 December 1997, Application of the Convention on the Prevention and
Punishment of the Crime of Genocide, Counter-claims, I.C.J. Reports 1997, p. 258, para. 35. See
also I.C.J., Order, 10 March 1998, Oil Platforms (Islamic Republic of Iran v. United States of
America), Counter-Claim, I.C.J. Reports 1998, p. 205, para. 38 or I.C.J., Order, 30 June 1999,
Land and Maritime Boundary between Cameroon and Nigeria, I.C.J. Reports 1999, pp. 985-986.

30 2.43 Additionally, as Nicaragua explained in Chapter 9 of its Counter-

Memorial, Costa Rica’s construction of the Road also constitutes a violation of

other conventions and principles of general international law, namely

97
 The 1971 Ramsar Convention, as amended;

 The 1990 bilateral Agreement over the Border Protected Areas

between Nicaragua and Costa Rica; 98

 The Convention on Biological Diversity of 21 May 1992;

 The Convention for the Conservation of the Biodiversity and

Protection of the Main Wild Life Sites in Central America of 5 June 1992;

 The obligation to conduct an appropriate EIA;

 The principle of non-harmful use of the territory; and

 The obligation to inform, notify and consult.

Costa Rica expressly relies upon these very conventions and principles in its

99
Memorial.

2.44 While these very similar lists of violated treaties and breached

principles demonstrate the striking interconnection of the respective cases of both

Parties, it is also worth noting that the fact that “Costa Rica also invoked [two]

96NCM, pp. 417-434, paras. 9.8-9.33 and pp. 450-451, paras. 9.76-9.77.
97Convention on Wetlands of International Importance especially as Waterfowl Habitat, Ramsar

(Iran) of 2 February 1971 as amended by the Paris Protocol of 3 December 1982, and Regina
98endments of 28 May 1987.
Agreement over the Border Protected Areas between Nicaragua and Costa Rica (International
99stem of Protected Areas for Peace [SI-A-PAZ] Agreement) of 15 December 1990.
See, e.g., CRM, pp. 13-14, para. 1.1 and Chapter V, Section B.

31 100
other international instruments that are not even invoked by Nicaragua” is

101
irrelevant. As explained below, claims and counter-claims need not rest on

identical instruments. 102

2.45 It can also be noted that, in the Factory at Chorzów case, the

P.C.I.J. observed that “the counter-claim is based on Article 256 of the Versailles

Treaty, which article is the basis of the objection raised by the Respondent, and

that, consequently, it is juridically connected with the principal claim.” 103

2.46 In the present case, Nicaragua relies on certain identical or similar

facts in order both to refute Costa Rica’s allegations and to obtain judgment

against that State. It invokes Article II of the 1858 Treaty of Limits to

demonstrate that it cannot be considered as having intruded into Costa Rica’s

territory. Nicaragua has also based its defence on Article VI of the Treaty, as well

as on the Cleveland Award, in order to rebut Costa Rica’s claim that Nicaragua

lacks the right to dredge the San Juan River. It is therefore clear that Nicaragua

“intends to rely on certain identical facts in order both to refute the allegations of

104
[Costa Rica] and to obtain judgment against that State.”

100
CRWO, p. 14, para. 2.25.
101See paras. 2.49-2.50.
102 I.C.J., Judgment, 19 December 2005, Armed Activities on the Territory of the Congo
(Democratic Republic of the Congo v. Uganda), p. 275, para. 326.
103P.C.I.J., Judgment, 13 September 1928, Factory at Chorzów (Merits), Series A, No. 17, p. 38.
104Cf. I.C.J., Order, 17 December 1997, Application of the Convention on the Prevention and

Punishment of the Crime of Genocide, Counter-claims, I.C.J. Reports 1997, p. 258, para. 34. See
also I.C.J., Order, 10 March 1998, Oil Platforms (Islamic Republic of Iran v. United States of
America), Counter-Claim, I.C.J. Reports 1998, p. 205, para. 38.

32 2. Nicaragua’s Second and Third Counter-Claims

2.47 Nicaragua’s second and third counter-claims, which concern,

respectively, the status of the San Juan del Norte Bay and Nicaragua’s right of

navigation on the Colorado River (which is but a branch of the San Juan de

Nicaragua River), call in part for the same remarks:

 They too are based on the 1858 Treaty of Limits, which is at the

core of the present case;

 Both concern the treaty regime of the boundary as fixed by that

Treaty; and

 More precisely, both relate to the consequences of the drying out of

the Bay, which is itself the consequence of Costa Rica’s internationally wrongful

acts.

2.48 Costa Rica argues that these counter-claims have no direct legal

connection with its claims because the Parties do not refer to the same articles of

the 1858 Treaty of Limits. Costa Rica further specifies that “it does not deal with

the interpretation of Article IV at all” 105nor has it “relied upon Article V of the

106
Treaty of Limits.” Once again, Costa Rica distorts the legal requirements of

Article 80.

105CRWO, p. 21, para. 4.7.
106Ibid., p. 25, para. 5.19.

33 2.49 As Costa Rica does in the present case, Iran argued in the Oil

Platforms case that the United States’ counter-claim was inadmissible because it

was based on provisions of the Treaty of Amity – which was also the basis of

Iran’s claims – never relied upon by Iran:

[T]he United States seeks to widen the dispute to provisions of the
Treaty of Amity, Articles X (2)-(5), which were never in question
in the proceedings to date, and have never been mentioned before

by the United States. Second, the United States also seeks to
widen the dispute to include US claims concerning Iran’s overall
conduct throughout the period 1987-1988, when it has always been
its position in the preliminary objection phrase that such overall

conduct, at least in so far as it concerned the United States, was
irrelevant in this case, and specifically brought its preliminary
objection to limit Iran's claim as far as possible.107

The Court dismissed this argument and found that “the counter-claim presented

by the United States is directly connected with the subject-matter of the claims of

108
Iran” since both the claim and the counter-claim were based on the 1955 Treaty

of Amity. 109

2.50 To be considered admissible, a counter-claim does not need to be

based on the same instrument, let alone the exact same provision of the

instrument, which constitutes the basis of the Applicant’s claim. As the Court

107I.C.J., Order, 10 March 1998, Oil Platforms (Islamic Republic of Iran v. United States of
America), Counter-Claim, I.C.J. Reports 1998, p. 196, para. 12.
108Ibid., p. 205, para. 39.
109Ibid., p. 205, para. 38. See also for a similar finding concerning the Genocide convention:
I.C.J., Order, 17 December 1997, Application of the Convention on the Prevention and
Punishment of the Crime of Genocide, Counter-claims, I.C.J. Reports 1997, p. 258, para. 35.

34made clear in the Armed Activities on the Territory of the Congo (Democratic

Republic of the Congo v. Uganda) case:

As the jurisprudence of the Court reflects, counter-claims do not

have to rely on identical instruments to meet the “connection” test
of Article 80 (see Land and Maritime Boundary between
Cameroon and Nigeria (Cameroon v. Nigeria), Preliminary
110
Objections, Judgment, I.C.J. Reports 1998, pp. 318-319).

2.51 In the present case, not only do the Parties rely on the same

instrument, the 1858 Treaty of Limits, they rely upon the same provisions of that

instrument:

 Costa Rica refers to Article IV of the 1858 Treaty of Limits, both in

111
the introductory chapter of its Memorial and repeatedly in one of the

112
substantive chapters. These cannot be considered mere references given that

Costa Rica expressly claims on four different occasions that it has sovereignty

113
over the Bay of San Juan del Norte. Costa Rica also uses its own interpretation

of Article IV as a rebuttal to Nicaragua’s position on the location of the land

boundary between the Parties:

Second, the San Juan del Norte Bay is common to both States. If
Nicaragua’s argument were followed, it would mean that Costa

Rica would not have a direct water access to the common bay, a
possibility that would be at odds not only with the letter and spirit

110
I.C.J., Judgment, 19 December 2005, Armed Activities on the Territory of the Congo
111mocratic Republic of the Congo v. Uganda), p. 275, para. 326.
CRM, p. 41, para. 2.20.
112Ibid., pp. 134-135, para. 4.4, pp. 140-141, para. 4.13 and pp. 142-143, para. 4.16.
113Ibid., p. 41, para. 2.20, pp. 134-135, para. 4.4, pp. 140-141, para. 4.13 and pp. 142-143, para.
4.16.

35 of the Treaty o114imits, but also with the very notion of
commonality.

 As regards the third counter-claim and contrary to what it

erroneously asserts, Costa Rica has, “in the present case, relied upon Article V of

the Treaty of Limits”. 115 In the very first paragraph of its Memorial, Costa Rica

states that:

The case concerns breaches by Nicaragua of obligations owed to
Costa Rica under [inter alia]: … the Treaty of Territorial Limits
between Costa Rica and Nicaragua of 15 April 1858 (the Treaty of
116
Limits), in particular Articles I, II, V, VI and IX.

Furthermore, in its Memorial, Costa Rica started discussing the subject-matter of

Nicaragua’s third counter-claim. It explains that:

He [President Ortega] also indicated that Nicaragua would

disregard the OAS resolution and would ask the International
Court of Justice to grant Nicaragua navigational rights on the
Colorado River, a river belonging wholly to Costa Rica and over
117
which Nicaragua has no navigational rights.

2.52 It is apparent that Costa Rica’s claims and Nicaragua’s counter-

claims have a direct connection that is both factual and legal. By making its four

counter-claims in the present case, Nicaragua makes it possible for the Court to

have a complete view of the background of the dispute – which encompasses a

114
CRM, pp. 142-143, para. 4.16.
115CRWO, p. 25, para. 5.19.
116CRM, p. 13, para. 1.1 – emphasis added.
117CRM, pp. 79-80, para. 3.29 – emphasis added.

36large range of issues, a complex set of disagreements on points of law and fact,118

all primarily related to the interpretation and application of the 1858 Treaty of

Limits. In deciding on Nicaragua’s counter-claims, the Court will, at last,

completely and finally, settle the dispute between the Parties, in accordance with

its function as defined in Article 38, paragraph 1, of its Statute.

PART III

THE JOINDER OF THE CASES IS APPROPRIATE

3.1 The Court will certainly recall that, on 21 December 2011,

Nicaragua filed an application concerning its dispute with Costa Rica regarding

the Construction of a Road in Costa Rica along the San Juan River. That case

concerns Costa Rica’s breaches of its obligations in relation to the legal regime

applicable to the San Juan River (in particular under the 1858 Treaty of Limits)

and Costa Rica’s related responsibility for the construction of its Road. This is

also the subject-matter of the first counter-claim raised in Nicaragua’s Counter-

Memorial in the present case, with which it is directly connected.

3.2 These are the reasons Nicaragua suggested the joinder of both cases

in paragraph 1.27 of its Counter-Memorial. In its Application in the Construction

of a Road case, Nicaragua reserved “its rights to consider in a subsequent phase of

118
Cf. the celebrated definition of a dispute by the PCIJ (P.C.I.J., Judgment, 30 August 1924, The
Mavrommatis Palestine Concessions, Series A, No. 2, p. 11).

37the present proceedings and after further consideration of the other pending case

whether to request that the proceedings in both cases should be joined.” 119

3.3 The Agent of Nicaragua renewed this suggestion in the letter

accompanying the deposit of Nicaragua’s Memorial in that case:

[G]iven the factual and legal connection between the two case
before the Court, 120 the Republic of Nicaragua respectfully draws

the attention of the Court to the need to join the proceedings, and
formally request the Court to decide on this matter in the interest of
the proper administration of Justice and in accordance with Article
121
47 of the Rules of Court.

3.4 For its part, Costa Rica objects to such a joinder which, it asserts,

would not be “appropriate”. 122 Besides repeating that the two cases “relate to

123
different subject-matters,” Costa Rica’s argument is exclusively of a procedural

nature:

The two cases each have their own procedural timetable. The Court
took notice that the parties agree that no second round of written
pleadings is needed in the present case. The other case awaits the

filing by Nicaragua of its Memorial in 19 December 2012.
Nicaragua requested a time-limit of one year, and as a corollary
Costa Rica will have a year to file its Counter-Memorial.
Procedural economy dictates that these two cases be kept separate,

not joined. Coherence does not require the joinder of cases either:
no finding of fact or law in the one case is necessary for a

119
120Application Instituting Proceedings, 22 December 2011, para. 56.
Certain Activities Carried out by Nicaragua in the Border Area (Costa Rica v. Nicaragua), and
121struction of a Road in Costa Rica along the San Juan River (Nicaragua v. Costa Rica).
Letter to the Registrar, 19 December 2012.
122CRWO, pp. 15-16, paras. 2.30-2.34.
123CRWO, p. 16, para. 2.32.

38 determination of the other. Finally, the composition of the Court is
different in the two cases. 124

3.5 As shown above, the two cases involve the same Parties and are

tightly connected both in law and in fact. There is therefore no reason why they

could not be joined: this would be in line with the spirit in which Article 47 of the

Rules was adopted and included in the 1978 Rules. 125 It can be further noted that

in all previous cases where the issue of a joinder arose, either a single applicant

had brought a case against two or several respondents, or two or several applicants

had brought a case against a single respondent 126 – which certainly made the

procedural arrangements more problematic than they would be here where both

cases to be joined involve, exclusively, the same Parties.

3.6 This is also true with respect to the composition of the Court,

127
which, the Applicant alleges, “is different in the two cases”. This argument is

far from compelling. In reality, the composition of the Court is almost identical:

all the 15 permanent Judges of the Court are called to sit in both cases, and

Nicaragua has appointed Mr. Gilbert Guillaume as Judge ad hoc in both cases.

Therefore, the only difference lies in the Judges ad hoc appointed by Costa Rica

in the two cases. 128 In this respect, it must be noted that when joinder had been

124CRWO, p. 16, para. 2.33.
125See Sh. Rosenne, The Law and Practice of the International Court (1920-2005), Nijhoff,

126den/Boston, 2006, p. 1214.
127See the list given ibid., pp. 1218-1219.
128CRWO, p. 16, para. 2.33 prec.
Mr. Christopher J. R. Dugard in the case concerning Certain Activities Carried out by
Nicaragua in the Border Area (Costa Rica v. Nicaragua) and Mr. Bruno Simma in the case

39decided in previous cases with different Applicants 129or Respondents, 130 only one

Judge ad hoc could be appointed, which certainly raised more problematic legal

or problematic issues than the fact that one of the two Judges ad hoc appointed by

a single Party would have to resign. 131

3.7 Costa Rica’s argument based on the time factor is hardly more

convincing: although the present case will indeed be ready for hearing when the

present Observations are completed (i.e., after 30 January 2013), the Counter-

Memorial in the case concerning the Construction of a Road is due on 19

December of this year, and it can hardly be expected that the case concerning

Certain Activities could be heard before this deadline specially in view of the

Counter Claims filed by Nicaragua in that case.

3.8 In fact, notwithstanding Costa Rican’s quibbles, a joinder of both

cases would certainly be most appropriate:

concerning the Construction of a Road in Costa Rica along the San Juan River (Nicaragua v.

129ta Rica).
I.C.J., Order, 20 May 1961, South West Africa Cases (Ethiopia v. Union of South Africa;
130eria v. Union of South Africa), I.C.J. Reports 1961, p. 14.
I.C.J., Order, 26 April 1968, North Sea Continental Shelf (Denmark/Federal Republic of
Germany; Federal Republic of Germany/Netherlands), I.C.J. Reports 1968, p. 10.
131Mutatis mutandis the hypothesis is not completely unprecedented (see, e.g., the Navigational
and Related Rights case: “[s]ince the Court included upon the Bench no judge of the nationality of
either of the Parties, each Party proceeded to exercise its right conferred by Article 31, paragraph

3, of the Statute to choose a judge ad hoc to sit in the case. Costa Rica chose Mr. Antônio
Cançado Trindade and Nicaragua Mr. Gilbert Guillaume. Mr. Cançado Trindade was
subsequently elected as a Member of the Court. Costa Rica informed the Court that it had decided
not to choose a new judge ad hoc.” (I.C.J., Judgment, 13 July 2009, Dispute regarding
Navigational and Related Rights (Costa Rica v. Nicaragua), I.C.J. Reports 2009, p. 219, para. 4);
in Nicaragua v. Colombia, “[f]ollowing his election as a Member of the Court, Mr Gaja decided
that it would not be appropriate for him to sit in the case. Nicaragua then chose Mr Thomas

Mensah as judge ad hoc.” (I.C.J., Judgment, 19 November 2012, Territorial and Maritime Dispute
(Nicaragua v. Colombia), para. 3).

40  It would not unduly delay the settlement of the dispute;

 It would enable the Court to get a full picture of the situation and to

settle the global dispute between the two states completely; and

 The joinder of the two cases would “achieve a procedural economy

whilst enabling the Court to have an overview of the respective claims of the

132
parties and to decide them more consistently.”

3.9 This is precisely what a sound administration of justice commands.

3.10 Incidentally, it can be noted that the last quote, from the 1997

Order of the Court in the Genocide case, relates to counter-claims, not to joinder.

And, to be sure, both institutions achieve the same purpose: procedural economy

in view of a sound administration of justice.

3.11 Moreover, Article 47 of the Rules of Court leaves a large measure

of flexibility to the Court when two or more cases are interconnected:

The Court may at any time direct that the proceedings in two or

more cases be joined. It may also direct that the written or oral
proceedings, including the calling of witnesses, be in common; or
the Court may, without effecting any formal joinder, direct
common action in any of these respects.

132I.C.J., Order, 17 December 1997, Application of the Convention on the Prevention and
Punishment of the Crime of Genocide, Counter-claims, I.C.J. Reports 1997, p. 257, para. 30. See
also Order, 10 March 1998, Oil Platforms (Islamic Republic of Iran v. United States of America),
Counter-Claim, I.C.J. Reports 1998, p. 205, para. 43 and Order, 29 November 2001, Armed
Activities on the Territory of the Congo (Democratic Republic of the Congo v. Uganda), I.C.J.
Reports 2001, p. 680, para. 44.

41 3.12 In the present case, Nicaragua would welcome any procedural

decision aiming at procedural economy: either a joinder or, at least the joined

discussion of Nicaragua’s counter-claims. Either solution would facilitate the

sound administration of justice.

PART IV

SUBMISSIONS

4.1 For the reasons expressed in its Counter-Memorial and in the

present Observations, the Republic of Nicaragua requests the Court to adjudge

and declare that:

 it has jurisdiction to decide on the counter-claims made by

Nicaragua in its Counter-Memorial; and

 that these counter-claims are admissible;

and to decide the joinder of the proceedings in the cases concerning Certain

Activities Carried out by Nicaragua in the Border Area and Construction of a

Road in Costa Rica along the San Juan River in accordance with Article 47 of the

Rules of Court.

The Hague, 30 January 2013.

Carlos J. Argüello Gómez

Agent of the Republic of Nicaragua

42

Document file FR
Document Long Title

Written observations of Nicaragua on the admissibility of its counter-claims

Links