Treaties & Conventions

Eritrea - Yemen Arbitration

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AWARD
Phase I: Territorial Sovereignty and Scope of Dispute

CHAPTER III – Some Particular Features of This Case

In General

91. It is convenient at the outset to call attention to some features of this case. There is one striking difference between the Parties themselves. Yemen traces its existence back to medieval times and even before the establishment of the Ottoman Empire; Eritrea on the other hand became a fully independent state, separate from Ethiopia, in the early 1990s. Nevertheless, Eritrea traces what it regards as its own title to the disputed islands through an historical succession from the Italian colonial period as well as through the post-Second World War period of its federation as part of the ancient country of Ethiopia. Accordingly the Tribunal has been presented by both Parties with great quantities of material put forward as evidence of the establishment of a legal title through the accumulated examples of claims, possession or use or, in the case of Yemen, through consolidation, continuity and confirmation of an "ancient title". All these materials of quite varying character and weight have had to be sifted, analysed and assessed by the Tribunal.

92. Since much of these materials relates to the actions and reactions or conduct of the Parties or of their predecessors, it is well to have in mind that both have experienced periods in which they were preoccupied by civil wars on either side of the Red Sea: Yemen from 1962-70, and Ethiopia with the severe and bloody conflict with Eritrean rebels which resulted in the independence of Eritrea in 1993.

93. The disputed islands and islets range from small to tiny, are uniformly unattractive, waterless, and habitable only with great difficulty. And yet it is also the fact that they straddle what has been, since the opening of the Suez Canal in 1869, one of the most important and busiest seaways in the world. These contradictory aspects of the disputed islands are reflected in the materials presented to the Tribunal. During the earlier periods the islands seem often hardly to have been noticed by coastal countries other than by local traditional fishermen who used them for shelter and their waters for anchorage; but did receive considerable attention, amounting even to temporary occupation, from rival colonial powers, notably Great Britain and Italy. This was no doubt because, after the opening of the Canal, this sea, narrowing in its southern part where the islands are situated, was the principal route from Europe to India, the East Indies and the Far East.

94. The former interest in these islands of Great Britain, Italy and to a lesser extent of France and the Netherlands, is an important element of the historical materials presented to the Court by the Parties, not least because they have had access to the archives of the time, and especially to early papers of the British Governments of the time. Much of this material is interesting and helpful. One general caveat needs, however, to be made. Some of this material is in the form of internal memoranda, from within the archives of the British Foreign Office, as it then was, and also sometimes of the Italian Foreign Office. The Tribunal has been mindful that these internal memoranda do not necessarily represent the view or policy of any government, and may be no more than the personal view that one civil servant felt moved to express to another particular civil servant at that moment: it is not always easy to disentangle the personality elements from what were, after all, internal, private and confidential memoranda at the time they were made.

Critical Date

95. Faced with such a mass of legal and political history, the Tribunal has felt it right to consider whether the notion of the "critical date" or "critical period" might assist in the organisation or the interpretation of this voluminous material. It has noted, however, that the Parties themselves have spoken of a critical date only in relation to the question discussed above: whether, in deciding on the scope of the Arbitration, the critical date is that of the Agreement on Principles or the Agreement on Arbitration. Neither of them has sought to employ a critical date argument in relation to any of the questions involving the substance of the dispute. In this situation the Tribunal has thought it best to follow the example of the1966 award in the arbitration between Argentina and Chile presided over by Lord McNair, and has accordingly "examined all the evidence submitted to it, irrespective of the date of the acts to which such evidence relates."(5)

Uti Possidetis

96. Yemen in its Counter Memorial introduced the doctrine of uti possidetis to explain what it holds to have been the legal position of these islands after the dissolution of the Ottoman Empire following the end of the First World War. The position is said to have been, in the words used by Yemen, that "[o]n the dismemberment of an empire like the Ottoman Empire, there is a presumption, both legal and political in character, that the boundaries of the independent states which replace the Empire will correspond to the boundaries of the administrative units of which the dismembered Empire was constituted." The principle of uti possidetis presumably provides the legal aspect of this presumption on which Yemen relies. Eritrea strongly contests this.

97. There is, however, a prior problem regarding the facts on which a legal presumption of uti possidetis would purport to be based. For such a legal presumption to operate it is necessary to know what were indeed "the boundaries of the administrative units of which the dismembered Empire was constituted." It is known that by firmans issued in 1841, 1866 and 1873, the Sublime Porte granted to the Khedive of Egypt the right to exercise jurisdiction over the African coast of the Red Sea. Presumably this right of jurisdiction over the African coast might naturally have extended to the islands which were in the neighbourhood of the coast and geographically at least seemed to belong to that coast. But how far this jurisdiction extended over the archipelago which is the principal element in the present dispute is to some extent a matter for conjecture. It seems that, unsurprisingly, the firman did not mention the archipelago. The sources provided by the Parties in relation to this question are primarily British Foreign Office internal papers and memoranda. And the answers there given were, it is made quite clear, based upon informed speculation. It is known that there were from time to time small Ottoman garrisons upon Zuqar and upon Hanish, and there are suggestions that they came from the Arabian side, and probably had their supplies from that coast.

98. There is particularly the September 1880 memorandum of Sir Edward Hertslet (author of the celebrated and influential Map of Africa by Treaty, and Librarian of the Foreign Office) compiled in the Foreign Office for the use of the Board of Trade, which was responsible for lighthouses in the Red Sea and which had sought Foreign Office help with the question of jurisdiction over lighthouse islands. In this memorandum Hertslet carefully distinguished between sovereignty, which the Ottoman Empire possessed over all these possessions, and a right of jurisdiction over the African side, which had been conferred on the Khedive. He drew up three long lists of the islands in the Red Sea. The first list was of the islands which in his opinion could be said to be "in close proximity" to the African coast, and the second list was of those in close proximity to the Arabian coast. The first list includes the Mohabbakahs and the Haycocks; the second list contains the islands in the "Jabel Zukar Group", those in the "Little Harnish Group", and those in the "Great Harnish Group". This memorandum appears to have been accepted as a working paper by both the Foreign Office and the Board of Trade, notwithstanding the fact that the perception of the second group as being "in close proximity" to the Arabian coast might be regarded as questionable in terms of physical geography. The third list was a relatively short one of islands near "the Centre of the Red Sea" including Jabal Al-Tayr and the Zubayr group, the jurisdiction over which was thought by Hertslet to be "doubtful", although the sovereignty remained Ottoman.

99. It is doubtful how far it would be right to base a legal presumption of the uti possidetis kind upon these speculations of a concerned but not disinterested third-government department; and this quite apart from the legal difficulties of creating a presumption which would be plainly at odds with the specific provision made for at least some of these islands by Article 16 of the Treaty of Lausanne of 1923.(6) Yemen of course pleads that this was res inter alios acta. But Turkey having been in a position to refuse to accept the Treaty of Sèvres, the sovereignty over these islands must have remained with Turkey until the Treaty of Lausanne was signed, and presumably until 1926 when it was ratified. Added to these difficulties is the question of the intertemporal law and the question whether this doctrine of uti possidetis, at that time thought of as being essentially one applicable to Latin America, could properly be applied to interpret a juridical question arising in the Middle East shortly after the close of the First World War.

100. Nevertheless, all this material about the position of the Islands during and shortly after the period of the Ottoman Empire remains an instructive element of the legal history of the dispute. It is especially interesting that even when the whole region was under Ottoman rule it was assumed that the powers of jurisdiction and administration over the islands should be divided between the two opposite coasts.

Article 15, Paragraph 1 of the Arbitration Agreement

101. This paragraph provides as follows:

Nothing in this Arbitration Agreement can be interpreted as being detrimental to the legal positions or to the rights of each Party with respect to the questions submitted to the Tribunal, nor can affect or prejudice the decision of the Arbitral Tribunal or the considerations and grounds on which those decisions are based.

    The Tribunal finds this provision less than perspicuous. A question to the Parties about it evoked different answers; both were to the general effect that this clause was meant as a "without prejudice" clause concerning the arguments and points of view they might wish to present to the Tribunal. As both Parties have fully argued their cases without either of them having occasion to invoke this provision, it seems to the Tribunal best to leave the matter there.

The Task of the Tribunal in the First Stage

102. The Agreement for Arbitration provides in the second paragraph of its Article 2:

2. The first stage shall result in an award on territorial sovereignty and on the definition of the scope of the dispute between Eritrea and Yemen. The Tribunal shall decide territorial sovereignty in accordance with the principles, rules and practices of international law applicable to the matter, and on the basis, in particular, of historic titles. The Tribunal shall decide on the definition of the scope of the dispute on the basis of the respective positions of the two Parties.

    Several of the clauses of this paragraph call for consideration. First there is the requirement that this stage shall "result in an award on territorial sovereignty." Thus, the Agreement does not require the Tribunal, as is often the case in agreements for arbitration, to make an allocation of territorial sovereignty to the one Party or the other. The result furthermore is to be an award "on" territorial sovereignty not an award "of" territorial sovereignty. The Tribunal would therefore be within its competence to find a common or a divided sovereignty. This follows from the language of the clause freely chosen by the Parties. It seems right that to call attention to the broader possibilities admitted by this unusual arbitration clause. The Tribunal has indeed considered all possibilities.

103. Further consideration must be given to the clause that requires the Tribunal to "decide territorial sovereignty in accordance with the principles, rules and practices of international law applicable in the matter, and on the basis, in particular, of historic titles."

104. As already mentioned, both Parties rely on various elements of evidence of possession and use as creative of title, and this is itself an appeal to what is a familiar kind of historic claim. As Judge Huber said in the Palmas case, "[i]t is quite natural that the establishment of sovereignty may be the outcome of a slow evolution, of a progressive intensification of State control."(7)

105. But Yemen also relies primarily upon what it calls specifically an "historic title". This calls for reflection upon the meaning of "title". It refers not to a developing claim but to a clearly established right, or to quote Pollock, "the absolutely or relatively best right to a thing which may be in dispute."(8) It is a matter of law, not of possession, though it would normally indicate a right in law to have possession even if the factual possession is elsewhere.

106. The notion of an historic title is well-known in international law, not least in respect of "historic bays", which are governed by rules exceptional to the normal rules about bays. Historic bays again rely upon a kind of "ancient title": a title that has so long been established by common repute that this common knowledge is itself a sufficient title. But an historic title has also another and different meaning in international law as a title that has been created, or consolidated, by a process of prescription, or acquiescence, or by possession so long continued as to have become accepted by the law as a title. These titles too are historic in the sense that continuity and the lapse of a period of time is of the essence. Eritrea pleads various forms of this kind of title, and so also does Yemen, which relies upon this latter kind of title as "confirmation" of its "ancient title".

107. The injunction to have regard to historic title "in particular" can hardly be intended to mean that historic title is to be given some priority it might not otherwise possess; for if there is indeed an established title B the best right to possession B then it is by definition a prior right. So perhaps the phrase "in particular" is put in out of abundant caution, lest the Tribunal, faced with a welter of other interests and uses, were to forget that there can be a separate category of title that does not depend upon use and possession, but is itself a right to possession whether or not possession is enjoyed in fact. At any rate, as will appear below, the Tribunal has not failed to examine historic titles of all kinds in its consideration of this case.

108. There have been different points of view between the Parties about the effects of this twofold division of a first stage award on territorial sovereignty and a second stage award on maritime boundaries. It was in the course of the supplementary proceedings on the Parties' petroleum agreements that Yemen became strenuously exercised over the possibility that the Tribunal might be tempted to "prefigure" (a nicely chosen expression) an eventual stage two maritime solution as an element of its thinking about stage one. Thus paragraph 20 of Yemen's written pleadings in the supplementary petroleum agreements phase states as follows:

This last element [prefiguring] is of particular concern to the Government of Yemen. It is always attractive to seek to discover a basis for dividing a group of islands, not least in an arbitration. The attraction must be the greater when the task of the Tribunal extends to the process of maritime delimitation, and no doubt caution will be needed to avoid a prefiguring of equitable principles and concepts, which are in law only relevant in the second phase of these proceedings.

This paragraph was repeated word for word in Yemen's oral argument in the July 1998 supplementary hearings.

109. A novel feature of Yemen's arguments, introduced at a late stage of the proceedings but clearly and strongly felt, concerned an apparently unacceptable supposition that an equitable solution was being contemplated for the first stage. This was curious, if only because it seems to have been the first and only reference to equity or equitable principles by either Party in course of the pleadings. Furthermore, no member of the Tribunal had mentioned equity or equitable principles.

110. This matter arose again in a somewhat different form in Yemen's answers to four questions put to both parties at the close of Yemen's oral argument in the supplementary proceedings, and which questions both Parties answered later in writing. The purpose of these questions was simply to ask both Parties how it was that some of their petroleum agreements, particularly those of Yemen, appeared to be drawn to extend to some sort of coastal median line. In response, Yemen felt obliged to "express the strongest possible reservation against the >prefiguring' of a median line".

111. Eritrea replied, in the Tribunal's view rightly, that Article 2.2 of the Arbitration Agreement requires the Tribunal to "decide territorial sovereignty in accordance with the principles, rules and practices of international law applicable to the matter, and on the basis, in particular, or historic titles." That formula must include any principles, rules or practices of international law that are found to be applicable to these matters of sovereignty, even if those principles, rules or practices are part of maritime law. Certainly the Tribunal is not in this first stage to delimit any maritime boundaries or to prefigure any such delimitation. But that is an entirely different matter from applying all international law that may relevant for the purpose of determining sovereignty, which is the province of this first stage.

112. In general, the Tribunal is unable to accept the proposition that the international law governing land territory and the international law governing maritime boundaries are not only different but also discrete, and bear no juridical relevance to each other. Such a theory is indeed disproved by Yemen's own request to the British Government to be allowed to attend the 1989 Lighthouses Conference on the ground that the northern islands were within Yemen's Exclusive Economic Zone.

113. It is well to have the considered view of the Tribunal on these questions stated at the outset of this Award. At the same time, it may be said that the Tribunal has no difficulty in agreeing with Yemen, and indeed also with Eritrea, that there can be no question of even "prefiguring", much less drawing, any maritime boundary line, whether median or indeed a line based on equitable principles, in this first stage of the arbitration.

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Notes - Chapter III

5. Argentina v. Chile (9 Dec. 1966), 16 R.I.A.A. 111, 115; 38 I.L.R. 16, 20 (1969).

6. Throughout this award, the date used for the Treaty of Lausanne is its date of signature, in 1923, rather than that of its entry into force (1926).

7. Island of Palmas (Neth. V. U.S.) 2 R.I.A.A. 829 at 867 (Apr. 4, 1928). Professor Max Huber, at the time President of the Permanent Court of International Justice, acted as sole arbitrator in proceedings conducted under the auspices of the Permanent Court of Arbitration, pursuant to the 1907 Convention for the Pacific Settlement of International Disputes.

8.Sir Frederick Pollock, A First Book of Jurisprudence 177 (6th ed., 1929).