DISSENTING OPINION OF JUDGE PARRA-ARANGUREN

The Anglo-German Agreement of1890 - The Parties' dijfering interpreta-
tions of the 1890 Treaty - Subsequent practice as a rule of treuty interpreta-
tion - Subsequent practice of the Parties in the applicationof the 1890 Agree-
ment - The Mandate for South West Africa (Numibia) - Relevant evidencr
suhmitted to the Court - Cuptain H. V. Euson's Report (1912) - Joint
Report of 1948 (Trollope-Redmun) und Exchange of Lerters between 1948 and

DISSENTING OPINION OF JUDGE FLEISCHHAUER

Interpretation of the terrn "main channe1"l"Hauptlauf' in Article III of the
1890 Treaty - The applicable law - The ordinary meuning of the terrn -
Object andpurpose of the 1890 Treatjs - The conte.rt in whick the term is used
- The error of theParties to the 1890Treaty in the uppreciation ufthe possible
uses of the Chobe River - The third paragraph of the dispositifof the Judg-
ment - Final remark on the role of prescription in the case.

DISSENTING OPINION OF VICE-PRESIDENT

WEERAMANTRY

Article 31 of Vienna Conventionon the Law of Treaties - Meaning of terms
"subsequent practice" and "agreement" in Article 31, paragraph 3 (b) -
Silence and non-protest as indicia of assent - "Common understanding" -
Ambivalence of scientijc criteria - Navigability as a criterion - The thalweg
concept - Cartographic evidence - Equitable navigationaluse of boundary

1145 KASIKILI~SEDUDU ISLAND (SEP.OP.KOOIJMANS)

SEPARATE OPINION OF JUDGE ODA

TABLE OF CONTENTS

II. THECASEPRESENTE TO THE COURT BYMEANS OF A COMPROMIS 9-21

(1) Lack of clarity in the compromis 9-10
(2) The background to the filing of the case at the Cour11-17
(3) Further comments on the lack of clarity in theis 18-21

III. "ON THEBASISOF THE1890ANGLO-GERMA TREATY" 22-33

DECLARATION OF JUDGE HIGGINS

The task of the Court - Temporal issues - Relevanceof mistake as regards
navigability - Realism in application of treaty terms - Importance of visible
physical features.

DECLARATION OF JUDGE KOROMA

Decision by Numihia and Botsivana to hring dispute to Court by Speciul
Agreement.
Possible interpretations of1890 Anglo-German Agreement -- Clloiceof one
such interpretatiorlby the Court - Recognition and applicationof principle qf
uti possidetisas part of the African legalorder.
Kasane Comnzuniquéas basis of shared use qf'river also in accordunceirith

contemporary legalprinciples of internutionul watercourses.

Legul effrct of Judgment 012boundary und stutus of Islund

DECLPLRATION OF JUDGE RANJEVA

First, 1should like to explain how 1interpret the reply to Article 1 of

152

DISSENTING OPINION OF JUDGE AD HOC BENNOUNA

[Translation]

Determination of legal title and effectivité at critical date in August 1960 —
Effectivité can supplement imprecise title — Legal title places boundary on left
bank of River Niger — Raynier letter of 27 August 1954 referred back to Daho-
mey’s title established in 1900 — Effectivités of Benin take precedence at criti-
cal date over those of Niger and confirm location of boundary on left bank of

DISSENTING OPINION OF JUDGE BUERGENTHAL