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  |  قرار المحكمة بشان أبيى عربي وانجليزى +خريطة |  | PCA PRESS RELEASE
 ABYEI ARBITRATION:
 FINAL AWARD RENDERED
 THE HAGUE, July 22, 2009
 In the matter of an arbitration pursuant to the Arbitration Agreement between the Government of
 Sudan and the Sudan People’s Liberation Movement/Army on Delimiting Abyei Area, the Presiding
 Arbitrator rendered and communicated, on behalf of the Tribunal, its Final Award on July 22 at the
 Permanent Court of Arbitration, the Peace Palace, The Hague.
 A summary of the proceedings and of the Final Award is set forth below. It must be emphasized that
 the summary contained in this Press Release, though approved by the Tribunal as an accurate
 summary of the principal features of the Award, is not an official text. The Final Award, including its
 Dispositif, is the authentic statement of the Tribunal’s final and binding decision.
 History of the proceedings
 On July 7, 2008, the Government of Sudan (“GoS”) and the Sudan People’s Liberation Movement
 /Army (“SPML/A”) signed the “Arbitration Agreement between The Government of Sudan and The
 Sudan People’s Liberation Movement/Army on Delimiting the Abyei Area” (“Arbitration
 Agreement”). In the Arbitration Agreement, the Parties agreed to submit, for final and binding
 decision, their dispute as to whether or not the experts of the Abyei Boundaries Commission (the
 “ABC” Experts), established pursuant to the Comprehensive Peace Agreement signed by the Parties
 on January 9, 2005 (“CPA”), exceeded their mandate.
 In accordance with the Arbitration Agreement, on July 11, 2008, the Parties deposited the Arbitration
 Agreement with the Secretary-General of the Permanent Court of Arbitration. The arbitral tribunal
 was fully constituted on October 30, 2008, and is composed of the following members:
 Professor Pierre-Marie Dupuy (Presiding Arbitrator)
 H.E. Judge Awn Al-Khasawneh
 Professor Gerhard Hafner
 Professor W. Michael Reisman
 Judge Stephen Schwebel
 In accordance with Article 8.3(i) of the Arbitration Agreement and the schedule set by the Tribunal,
 the Parties filed their written Memorials on December 16, 2008, their Counter-Memorials on February
 13, 2009, and their Rejoinders on February 28, 2009. Oral pleadings, which were open to the public
 and attended by over 200 representatives of the Parties, were held at the Peace Palace in The Hague
 from April 18 to April 23, 2009. Under Article 9(1) of the Arbitration Agreement, the final award
 was to be rendered within ninety days from the closure of submissions, i.e., on July 22, 2009.
 Mandate of the Tribunal
 Under Article 2 of the Arbitration Agreement, the issues to be determined by the Tribunal were the
 following:
 (a) Whether or not the ABC Experts had, on the basis of the agreement of the
 Parties as per the CPA, exceeded their mandate which is ‘to define (i.e.
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 delimit) and demarcate the area of the nine Ngok Dinka chiefdoms
 transferred to Kordofan in 1905’ as stated in the Abyei Protocol, and
 reiterated in the Abyei Appendix and the ABC Terms of Reference and
 Rules of Procedure.
 (b) If the Tribunal determines, pursuant to Sub-article (a) herein, that the ABC
 Experts did not exceed their mandate, it shall make a declaration to that
 effect and issue an award for the full and immediate implementation of the
 ABC Report.
 (c) If the Tribunal determines, pursuant to Sub-article (a) herein, that the ABC
 Experts exceeded their mandate, it shall make a declaration to that effect,
 and shall proceed to define (i.e. delimit) on map the boundaries of the area
 of the nine Ngok Dinka chiefdoms transferred to Kordofan in 1905, based
 on the submissions of the Parties.
 The mandate of the ABC Experts was expressed in Section 5.1 of the Abyei Protocol, signed between
 the Parties on May 26, 2004 and included in the Comprehensive Peace Agreement:
 5. Determination of Geographic Boundaries
 5.1 There shall be established by the Presidency, Abyei Boundaries
 Commission (ABC) to define and demarcate the area of the nine Ngok
 Dinka Chiefdoms transferred to Kordofan in 1905, referred to herein as
 the Abyei Area.
 The Abyei Area was defined in Section 1.1.2 of the Abyei Protocol:
 1.1.2 The territory is defined as the area of the nine Ngok Dinka
 Chiefdoms transferred to Kordofan in 1905.
 Applicable Law
 Pursuant to the Arbitration Agreement, the Tribunal was required to reach its decision based on the
 following “applicable law”: the CPA (particularly the Abyei Protocol and the Abyei Appendix), the
 Interim National Constitution of the Republic of Sudan (2005), general principles of law and practices
 that the Tribunal deemed relevant, and the Arbitration Agreement itself.
 Parties’ Positions
 The GoS formally submitted that (i) the ABC Experts exceeded their mandate, and (ii) the area of the
 nine Ngok Dinka chiefdoms transferred to Kordofan in 1905 is the area bounded on the north by the
 Bahr el-Arab and otherwise by the boundaries of Kordofan as at independence (Figure 17, GoS
 Memorial).
 The SPLM/A formally submitted that the ABC Experts did not exceed their mandate. In the
 alternative, the SPLM/A formally submitted that if the Tribunal determines that the ABC Experts
 exceeded their mandate, a declaration be made that the boundaries of the area of the nine Ngok Dinka
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 Chiefdoms transferred to Kordofan in 1905 are the current boundary of Kordofan and Bahr el-Ghazal
 to the south extending to 10°35’N latitude to the north and the current boundary of Kordofan and
 Darfur to the west extending to 29°32”15’E longitude to the east.
 Summary of the Decision
 In its Final Award, the Tribunal reaches the following decision:
 The Tribunal’s Task Pursuant to the Arbitration Agreement
 At the outset, the Tribunal establishes that Article 2 of the Arbitration Agreement requires the
 Tribunal to proceed in a contingent two-stage sequence:
 · First, the Tribunal must determine, under Article 2(a) of the Arbitration Agreement, whether
 the ABC Experts exceeded their mandate, which was “to define (i.e. delimit) and demarcate
 the area of the nine Ngok Dinka chiefdoms transferred to Kordofan in 1905.”
 · Second, to the extent that the Tribunal determines that the ABC Experts exceeded their
 mandate, Article 2(c) of the Arbitration Agreement requires the Tribunal to itself “define (i.e.
 delimit) on map the boundaries of the area of the nine Ngok Dinka chiefdoms transferred to
 Kordofan in 1905 based on the submissions of the Parties.”
 In the Tribunal’s view, the sequence of these two stages in the Arbitration Agreement is important, as
 it prescribes the methodology to be used by the Tribunal. The Tribunal is to first decide whether or
 not the ABC Experts exceeded their mandate, i.e., to determine whether or not the Experts’
 interpretation and implementation of its mandate was reasonable. If and to the extent that the Tribunal
 finds that the Experts did exceed their mandate, the Parties require the Tribunal to itself define and
 delimit the borders of the Abyei Area, based on the submissions of the Parties in these proceedings.
 Thus, the Tribunal finds that the sequence of Article 2 requires the Tribunal to conduct a new review
 of all evidence if, and only if, the ABC Experts were found to have exceeded their mandate.
 Conversely, for the primary task of determining whether an excess of mandate occurred, the Parties
 did not expect or authorize the Tribunal to evaluate the evidence in such a manner as to amount to a
 re-determination of the correct boundaries of the Abyei Area in 1905.
 The Tribunal notes that this conclusion is also in accordance with the applicable law stipulated by the
 Arbitration Agreement. The Tribunal, while remaining mindful of the primary importance of deciding
 the issues presented based on the CPA, the Interim National Constitution, and the Arbitration
 Agreement, interprets the term “general principles of law and practices” in Article 3 of the Arbitration
 Agreement to include relevant principles of public international law. Relevant general principles of
 law and practices of institutional review confirm that the “correctness” of the ABC Experts’ decision
 is beyond the Tribunal’s review for purposes of determining an excess of mandate under Article 2(a).
 Standard of Review for Determining an Excess of Mandate
 To determine whether an “excess of mandate” occurred under Article 2(a), the Tribunal is required to
 analyze the specific standard of review applicable with respect to both the ABC Experts’
 interpretation and implementation of their mandate.
 With regard to interpretation, the Tribunal is again guided by the sequence of Article 2 of the
 Arbitration Agreement in determining the applicable standard. The Tribunal finds that it is authorized
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 by the Parties to make its own determination as to the boundaries of the Abyei Area only under
 Article 2(c). Thus, it can only proceed to a comprehensive evaluation and delimitation using the
 available evidence if and when it has found that an excess of mandate occurred and an Article 2(c)
 determination is thus required. An excess of mandate determination under Article 2(a) cannot extend
 to a determination of whether the ABC Experts’ interpretation of the “Formula” defining their
 mandate was correct. To interpret Article 2(a) as requiring the Tribunal to already decide whether the
 Experts’ interpretation of the mandate was correct would eliminate the distinction between Article
 2(a) and 2(c). The Tribunal concludes that its review pursuant to Article 2(a) is limited to determining
 the reasonableness of the ABC Experts’ interpretation of their mandate.
 In addition, the Tribunal finds that the ABC Experts were vested with the competence to interpret
 their own competence (Kompetenz-Kompetenz), and were thus empowered to determine the bounds of
 their own mandate. Legal principles requiring a court or tribunal to defer to the reasonable findings of
 a primary decision-maker support the Tribunal’s conclusion that review pursuant to Article 2(a) is
 limited to determining the reasonableness of the ABC Experts’ interpretation of their mandate.
 This approach is also consistent with general principles of international law: as the International Court
 of Justice (“ICJ”) held, in reviewing the findings of a primary decision-maker vested with Kompetenz-
 Kompetenz, the reviewing court or tribunal is not “called upon to pronounce on whether the
 arbitrator’s decision was right or wrong” but merely whether the original decision-maker acted in
 “manifest breach” of the competence conferred on it by the arbitration agreement.
 Moving to the standard of review applicable to the implementation of the ABC Experts’ mandate, the
 Tribunal rules that, while it is not authorized under the Arbitration Agreement to review the ABC
 Experts’ decision for “substantive errors,” a failure to state sufficient reasons for a decision may
 amount to an “excess of mandate.” The Tribunal finds that the ABC Experts’ mandate included the
 duty to state reasons. This follows from the Parties’ shared expectations, which may be inferred from
 the context in which the ABC Experts were expected to operate and the function that they were
 assigned within the greater peace process. Moreover, the fact that the ABC Experts’ Report was to be
 “based on scientific analysis and research” as well as the object and purpose of the ABC’s constitutive
 instruments demonstrate that the duty to state reasons was integral to the ABC Experts’ mandate.
 Based on “general principles of law and practices” regarding the annulment of arbitral decisions as
 well as the object and purpose of the ABC’s constitutive instruments, the Tribunal finds that the
 Experts were required to sufficiently explain their decisions to allow the readers to understand how
 these were arrived at. The ABC Experts would have exceeded their mandate if some or all of their
 conclusions were unsupported by sufficient reasons, if the reasoning was incoherent, or if the reasons
 provided were obviously contradictory or frivolous.
 Reasonableness of the ABC Experts’ Interpretation of Their Mandate
 Having established that the ABC Experts would have acted in excess of mandate if their
 interpretation of their task must be considered unreasonable, the Tribunal then turns to an assessment
 of the ABC Experts’ interpretation of their mandate. Based on the Parties’ arguments before the ABC
 as well as statements by the ABC Experts in their Report, the Tribunal establishes that the ABC
 Experts adopted a predominantly “tribal” interpretation of their mandate: the ABC Experts understood
 their mandate as requiring them to delimit and demarcate the area of the nine Ngok Dinka Chiefdoms
 as of 1905, i.e., the extent of Ngok Dinka settlements in 1905. This is in contradistinction to the GoS’s
 predominantly “territorial” understanding of the ABC Experts’ mandate, which comprehended
 determining a defined area of land that was administratively transferred by the Anglo-Egyptian
 Condominium in 1905.
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 The Tribunal concludes that the predominantly tribal interpretation adopted by the ABC Experts is not
 unreasonable, on the following grounds:
 · The wording of the Formula can be interpreted as supporting either the “tribal” or the
 “territorial” interpretation, and it was therefore not unreasonable for the Experts to adopt the
 former.
 · The object and purpose of the Formula supports a predominantly “tribal” interpretation. In the
 Tribunal’s view, the ABC Experts’ Report had a specific and crucial function within the
 Sudanese peace process: the decision was intended to authoritatively define the boundaries of
 the Abyei Area, the residents of which would be entitled to decide in a referendum in 2011
 whether they should be part of the north or the south of Sudan. As clarified by the “Protocol
 on the Resolution of the Abyei Area dated May 26, 2004” between the Parties, the Ngok
 Dinka people were intended to be the main beneficiaries of this referendum. Since the tribal
 interpretation would lead to a definition of the Abyei Area that encompasses all of the Nine
 Ngok Dinka Chiefdoms in 1905, it cannot be considered unreasonable.
 · The text of the applicable instruments, in particular, the procedural provisions in the CPA and
 the drafting history of the Protocol, support the reasonableness of the predominantly “tribal”
 interpretation.
 · Finally, the predominantly “tribal” interpretation is reasonable in light of the historic facts of
 the 1905 transfer. In the Tribunal’s view, the evidence on record can reasonably be
 interpreted as supporting the following propositions: (1) the provincial boundaries between
 Bahr el-Ghazal and Kordofan in 1905 were uncertain; (2) there was very limited
 administration by the Condominium officials in the area in 1905; (3) the Condominium
 officials had limited knowledge of the extent of territory used and occupied by the Ngok
 Dinka; and (4) the 1905 transfer was principally effectuated to pacify the area and protect the
 Ngok Dinka from raids by the Humr.
 The Tribunal adds that, since the interpretation made by the ABC Experts is subject to a
 reasonableness test (rather than a correctness test), its conclusion should not be taken to suggest that
 the opposite, predominantly territorial, interpretation was less reasonable. Rather, the Tribunal is not
 required or authorized to decide which out of the two possible interpretations is more “correct.”
 The Tribunal therefore finds that the ABC Experts did not exceed their mandate in interpreting their
 mandate in the manner that Experts did.
 Implementation of the ABC Experts’ Mandate
 However, the Tribunal decides that the ABC Experts exceeded their mandate in certain areas of its
 implementation. Specifically, the ABC Experts failed to state sufficient reasons concerning some
 aspects of their decisions and thus exceeded their mandate with respect to some of their conclusions.
 Northern Boundary of the Abyei Area
 The Tribunal does not find that there was an excess of mandate with respect to the ABC Experts’
 decision to adopt latitude 10°10’N as the northern limit of the Area of permanent Ngok Dinka
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 habitation transferred in 1905. In the Tribunal’s view, the Experts’ reasoning regarding the selection
 of latitude 10°10’N is comprehensible and complete.
 However, the Tribunal rules that the ABC Experts did exceed their mandate regarding the drawing of
 the northernmost limit of the Ngok Dinka and Misseriya’s “shared rights” area at latitude 10°35’N
 (and, by implication, the northern limit of the Abyei Area at latitude 10°22’N) because they did not
 provide sufficient reasoning. The Tribunal notes that the ABC Experts themselves accepted that the
 evidence in support of latitude line 10°35’N was “inconclusive.” In the absence of other evidence, the
 ABC Experts’ decision relied on the mere observation that the SPLM/A’s northernmost claim
 coincided with the northernmost limit of the Goz. The Tribunal finds that such coincidence does not
 per se amount to the principled decision based on reasons required from the ABC Experts.
 Southern boundary
 The Tribunal rules that the ABC Experts were not in excess of mandate regarding their decision over
 the southern boundary of the Abyei Area. The Tribunal recalls that the southern boundary remained
 uncontroversial during the ABC proceedings as well as the present proceedings.
 The Eastern and Western Boundaries of the Abyei Area
 The Tribunal finds that the ABC Experts’ decisions regarding the eastern and western boundary lines
 were in excess of mandate for failure to state sufficient reasoning. For the Tribunal, the selection of
 the western boundary line by the ABC Experts was entirely unreasoned; indeed the ABC Experts
 made no specific pronouncement regarding the western boundary at all, merely stating in summary
 fashion that “[a]ll other boundaries … shall remain as they are.” The eastern boundary coincided with
 the easternmost claim of the SPLM/A and was supported by a sketch map that the ABC Experts
 themselves regarded as “inconclusive.” The Tribunal concludes that it was plainly contradictory for
 the ABC Experts to draw conclusions from evidence that they themselves considered inconclusive.
 Given this excess of mandate by the ABC Experts, the Tribunal therefore turns to the second aspect of
 its own mandate, namely to define (i.e. delimit) on map the eastern and western boundaries of the
 Abyei Area in accordance with Article 2(c) of the Arbitration Agreement.
 Pursuant to its Article 2(c) inquiry, the Tribunal rules that the eastern boundary of the Abyei Area
 runs along longitude 29°00'00"E, from latitude 10°10’00”N south to the Kordofan – Upper Nile
 boundary as it was defined on 1 January 1956. Moreover, the Tribunal rules that the western boundary
 of the Abyei Area runs along longitude 27°50'00"E, from latitude 10°10’00”N south to the Kordofan
 – Darfur boundary as it was defined on 1 January 1956. The western boundary of Abyei Area then
 follows the Darfur-Kordofan boundary until it meets the southern boundary of the Abyei Area.
 The Tribunal arrives at these conclusions by looking at the scholarly, documentary, cartographic and
 oral evidence submitted by the Parties. This evidence demonstrates that Ngok Dinka permanent
 settlements were mostly located around the Bahr river system and its main watercourses, including the
 Bahr el-Arab, the Ragaba Umm Biero, and the Ragaba ez Zarga, and concentrated approximately
 between longitudes 27°50’00”E and 29°00’00”E, up to latitude 10°10’00”N.
 With regard to the available evidence, a careful review of the Parties’ submissions reveals that the
 evidence remains scanty. In particular, the evidence does not include any map from 1905, or indeed
 later years, that provides the specific coordinates of the western or eastern limits of the area occupied
 by the nine Ngok Dinka Chiefdoms transferred in 1905. The Tribunal notes both Parties’ recognition
 that drawing these limits is not an easy task. Accordingly, the Tribunal emphasizes that it has a duty
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 to render its decision on the basis of what it considers, after careful review and within the confines of
 the predominantly tribal interpretation of the mandate, as the best available evidence.
 Key to the Tribunal’s decision is the evidence provided by anthropological experts, in particular
 District Commissioner Howell and Professor Cunnison. These specialists were relied upon by both
 Parties in these proceedings, and the Tribunal finds their work to be particularly cogent. Howell’s and
 Cunnison’s extensive experience based on field visits in the region where the Ngok Dinka resided,
 with Professor Cunnison in particular having lived for more than two years in a Humr camp, has led
 the Tribunal to place greater reliance on their understanding. The Tribunal also notes that the
 descriptions by Cunnison match the satellite photographs of the Bahr region submitted to the Tribunal
 and are consistent with the observations of an expert witness, Professor Allan, regarding the
 geographic extension of the “Bahr region.”
 Based on the evidence on record, the Tribunal finds that there has been continuity of Ngok Dinka
 historic territory, within an unchanged ecology, in the Bahr region. The many scholarly and
 documentary sources describe the Bahr in the same way, namely the whole of the tributary systems of
 the Bahr el Arab including to the north and east of the Ragaba ez Zarga. In addition, these sources
 also consistently refer to the Bahr region as the traditional home of the Ngok Dinka, and as the
 seasonal grazing area of the Humr Misseriya. Statements by Professor Cunnison make it appear most
 likely that Ngok Dinka settlements have been continuous from as early as “the beginning of the 20th
 century, or the end of the Mahdiya.”
 The Tribunal also considers the seasonal grazing patterns of both the Ngok Dinka and the Misseriya
 Humr, and how their use of land was affected by the seasonal ecology of the region. All this evidence
 confirms the conclusion that the Area of the Nine Ngok Dinka Chiefdoms transferred in 1905
 extended between longitudes 27°50’00”E and 29°00’00”E.
 The Boundary Delimited by the Tribunal Does Not Prejudice Traditional Grazing Rights
 The Tribunal emphasizes that the CPA (including the Abyei Protocol), which is part of the Tribunal’s
 applicable law, confirms the Parties’ intention to accord special protection to the traditional rights of
 the people settling within and in the vicinity of the Abyei Area. Most importantly, the Protocol
 specifically recognizes the need to safeguard the grazing rights of the Misseriya and other nomadic
 peoples.
 The Tribunal also finds that, under relevant principles of international law as applied in boundary
 disputes, traditional rights have usually been deemed to remain unaffected by any territorial
 delimitation. The transfer of sovereignty in the context of a boundary delimitation should not be
 construed to extinguish traditional rights to the use of land.
 Finally, the Tribunal stresses that its mandate under Article 2(c) requires it to delimit “on map” the
 boundaries of the Abyei Area. The Tribunal’s attention to territorial boundaries should not, however,
 be taken to imply that the Parties are entitled to disregard other territorial relationships that people
 living in and in the vicinity of the Abyei Area have historically maintained.
 Dispositif
 Having considered all relevant arguments, the Tribunal concludes that:
 (a) Northern Boundary
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 1. In respect of the ABC Experts’ decision that “[t]he Ngok have a legitimate
 dominant claim to the territory from the Kordofan – Bahr el-Ghazal boundary
 north to latitude 10°10’N,” the ABC Experts did not exceed their mandate.
 2. In respect of the ABC Experts’ decision relating to the “shared secondary
 rights” area between latitude 10°10’N and latitude 10°35’N, the ABC Experts
 exceeded their mandate.
 3. The northern boundary of the area of the nine Ngok Dinka chiefdoms
 transferred to Kordofan in 1905 runs along latitude 10°10’00”N, from
 longitude 27°50’00”E to longitude 29°00’00”E.
 (b) Southern Boundary
 1. In respect of the ABC Experts’ decision that “[t]he southern boundary shall
 be the Kordofan – Bahr el-Ghazal – Upper Nile boundary as it was defined
 on 1 January 1956,” the ABC Experts did not exceed their mandate.
 2. The southern boundary as established by the ABC Experts is therefore
 confirmed, subject to paragraph (c) below.
 (c) Eastern Boundary
 1. In respect of the ABC Experts’ decision that “the eastern boundary shall
 extend the line of the Kordofan – Upper Nile boundary at approximately
 longitude 29°32'15"E northwards until it meets latitude 10°22'30"N”, the
 ABC Experts exceeded their mandate.
 2. The eastern boundary of the area of the nine Ngok Dinka chiefdoms
 transferred to Kordofan in 1905 runs in a straight line along longitude
 29°00’00”E, from latitude 10°10’00”N south to the Kordofan – Upper Nile
 boundary as it was defined on 1 January 1956.
 (d) Western Boundary
 1. In respect of the ABC Experts’ decision that “[t]he western boundary shall be
 the Kordofan – Darfur boundary as it was defined on 1 January 1956,” the
 ABC Experts exceeded their mandate.
 2. The western boundary of the area of the nine Ngok Dinka chiefdoms
 transferred to Kordofan in 1905 runs in a straight line along longitude
 27°50’00”E, from latitude 10°10’00”N south to the Kordofan – Darfur
 boundary as it was defined on 1 January 1956, and continuing on the
 Kordofan – Darfur boundary until it meets the southern boundary confirmed
 in paragraph (b) above.
 (e) Grazing and other Traditional Rights
 1. In respect of the ABC Experts’ decision that “[t]he Ngok and Misseriya shall
 retain their established secondary rights to the use of land north and south of
 this boundary,” the ABC Experts did not exceed their mandate.
 2. The exercise of established traditional rights within or in the vicinity of the
 Abyei Area, particularly the right (guaranteed by Section 1.1.3 of the Abyei
 Protocol) of the Misseriya and other nomadic peoples to graze cattle and
 move across the Abyei Area (as defined in this Award), remains unaffected.
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 In arriving at its decision, the Tribunal emphasizes that its mandate was limited by the Parties’
 agreement in the Arbitration Agreement. The Tribunal acknowledges the possibility that the boundary
 lines may inadvertently lead to the partition of an inhabited permanent settlement, such as a village or
 town, in a manner that causes manifest impracticability to the inhabitants. In this regard, the Tribunal
 urges the Parties to begin immediate discussions with a view to reaching express agreement to
 mitigate hardships on the ground and to facilitate resolutions to such problems.
 Final and Binding Nature of the Tribunal’s Award
 Under the Abyei Road Map, “[t]he parties commit themselves to abide by and implement the award of
 the arbitration tribunal.” The Arbitration Agreement reiterates: “[t]he Parties agree that the arbitration
 award delimiting the “Abyei Area” through determining the issues of the dispute as stated in Article 2
 of this Agreement shall be final and binding.”
 During the ceremony held at the Peace Palace on July 22, 2009, the Presiding Arbitrator stated:
 “The Security Council of the United Nations, which recognizes the importance of this
 Award to peace and reconciliation in Sudan among all of its peoples, has called upon the
 Government of Sudan and the SPLM/A to treat the Award as binding and to implement it
 fully. The Parties are so bound by the terms of their Arbitration Agreement and by the
 force of international law. The Tribunal has produced an Award which resolves the
 dispute between the Parties over the validity of the ABC Decision and which, in
 accordance with the Arbitration Agreement, draws a boundary that reflects the facts and
 law of the matter. The Tribunal has acted scrupulously within its mandate to prepare an
 award in whose terms and holdings it has every confidence. It is equally confident that
 the Parties will abide by and implement the Award in good faith.”
 Dissenting Opinion
 The Chairman also noted that one of the members of the Tribunal, H.E. Judge Awn Al-Khasawneh,
 has filed a dissenting opinion. (A brief summary of Judge Al-Khasawneh’s dissenting opinion is
 appended hereto as an annex.)
 * * *
 By agreement, pleadings, transcripts, and other documents relating to these proceedings have also
 been made public. These are all available at the PCA website (http://www.pcacpa.
 org/showpage.asp?pag_id=1306). The oral pleadings were webstreamed live on the PCA website,
 and a video recording of those proceedings remains available.
 * * *
 With reference to recent press reports regarding the rendering of an award in the Arbitration between
 the Government of Sudan and the Sudan People’s Liberation Movement/Army, the PCA believes it
 might be useful to provide a brief background note clarifying the work of the PCA and its role in the
 settlement of international disputes.
 The PCA was established by treaty in 1899 and is the oldest intergovernmental organization devoted
 to the peaceful resolution of disputes through arbitration in the world. Its seat is the Peace Palace, The
 Hague, The Netherlands. The PCA provides institutional support for arbitrations and other alternative
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 dispute resolution mechanisms in which the judicial panel for each case is chosen by the parties on an
 ad hoc basis. Specifically, the PCA’s secretariat – the International Bureau – provides registry
 services and legal support to arbitral tribunals, commissions, and other similar bodies. Members of
 the International Bureau frequently serve as registrar or administrative secretary to tribunals and other
 bodies. In this capacity, they provide, inter alia, an official channel for communications between
 parties and tribunals, financial administration, and archival services. The PCA does not, however,
 itself render awards or decisions. Rather, the arbitral tribunals and other bodies, which are established
 under the auspices of the PCA, render the award.
 Further information on the PCA is available at http://www.pca-cpa.org.
 * * *
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 Annex to PCA Press Release
 July 22, 2009
 Dissenting Opinion of Judge Al-Khasawneh
 Summary
 A member of the Tribunal, Judge Awn Shawkat Al-Khasawneh, who is a serving member of the
 International Court of Justice, appended a dissenting opinion explaining the reasons for his dissent. It
 is a 69-page document in English.
 The main points of the Dissenting Opinion of Judge Al-Khasawneh are as follows:
 · The Award and its reasoning are unconvincing, self-contradictory, result-oriented, and are not
 supported by evidence but rather contradicted by overwhelming evidence.
 · The Award is likely to have a profound impact on the Sudan and its future as a State and on
 the peace and well-being of all its citizens regardless of ethnicity or creed.
 · The ABC Experts had a relatively clear mandate: to delimit the area of the nine Ngok Dinka
 Chiefdoms transferred to Kordofan in 1905. It was not to locate where the Ngok Dinka were
 in 1905 or at any other date, which is a totally different question.
 · In case of doubt, the ABC Experts should have sought clarification of their mandate from the
 Parties. Instead, they went on a frolic of their own and adopted a new mandate.
 · The cornerstone of the misinterpreted mandate is based on the paradigm of “dominant”
 (Ngok) rights versus “secondary” (Homr) rights. This is discriminatory concept is totally
 baseless in law and custom of Kordofan. It will make the Homr second-class citizens in their
 own country.
 · The ABC Experts, without supporting evidence, ascribed vast tracts of land to the Ngok in
 areas where they never had any collective presence in 1905 or indeed in 19065, the year of
 their maximum expansion to the North.
 · The Award is an ill-assorted mélange between two aims:
 (a) to protect the Experts’ Report from invalidation; and
 (b) to uphold parts of the Experts’ Report whilst invalidating others but without taking
 account of the fundamental rights of the Misseriya tribe.
 · The delimitation by the Tribunal is based on a misquotation from P. P. Howell (a
 Condominium official and an anthropologist), who indicated in 1951 that the Ngok lived
 approximately between 29° E and 27° 50 E. Even if this was true in 1951, it was not true in
 1905, when contemporaneous evidence places the Ngok just to the North of the Bahr el Arab
 and not as far west as 27° 50 E. Moreover, all that land was a shared rights area where the
 Homr behaved on the assumption that it was their ‘dar’ (country), and where they paid
 ‘tribute’ (tax) to Condominium officials.
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 · Judge Al-Khasawneh also explained that the Tribunal itself was in excess of mandate on at
 least two counts:
 (a) First, it effected a partial annulment of the Experts’ delimitation without authority from its
 own mandate. Moreover, it persisted in effecting this partial annulment despite having
 impugned so much of the Experts’ decision that the remainder is so thin and truncated that it
 cannot stand on its own.
 (b) Secondly, it replaced the Experts’ unreasoned delimitation lines by equally unreasoned lines
 of its own. Lack of reasoning is a ground for excess of mandate which applies, following the
 Tribunal’s own reasoning, to the Tribunal’s delimitation.
 · By dabbling into compromise, the Tribunal lost the logical integrity of its reasoning: the
 reasoning with which it evaluated the ABC Report. At the same time it could not provide
 a durable and fair compromise because it faield utterly to take on board the rights of the
 Misseriya.
 · Judge Al-Khasawneh, quoting the great Persian poet Hafiz, who said that “The house of
 hope is built on sand”, concluded by noting that the construct the Tribunal had made was
 weaker than a spider’s web because it disposed of so much on the basis of such meagre
 evidence.
 · He also pointed out the inadequacy of the Tribunal’s reasoning:
 (a) The low standard of “reasonableness” (rather than correctness) cannot be the basis
 on which to define what could potentially become an international boundary.
 (b) Reliance on approximate locations and rough areas to delimit a land boundary is an
 affront to the science of territorial delimitation.
 (c) Transposing concepts essentially from commercial arbitration was inappropriate.
 Thus the experts are not entitled to the status of ‘preferred arbiters of fact’ because of
 accusations against them of bad faith and because their mandate was purely fact-finding
 and they had no prescriptive powers.
 · Judge Al-Khasawneh came to the conclusion that even on a predominantly tribal
 interpretation of the ABC Experts’ mandate, the extent of the location of the Ngok Dinka
 was nowhere near that of the area ascribed to them by the Experts or the Tribunal
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