Compliance with ICJ/PCIJ Decisions on Territorial, River, and Maritime Issues
This is a Web appendix for Sara Mitchell and Paul Hensel's 2007 American Journal of Political Science article "International Institutions and Compliance with Agreements." It lists every territorial, river, or maritime issue that has been submitted to the International Court of Justice (ICJ) or Permanent Court of International Justice (PCIJ), as of May 2007. The purpose is to analyze the parties' compliance with judicial awards.
Qualifying cases are identified using the following sections of the ICJ web site:
- Cases Referred to the ICJ (1946-present)
- PCIJ Publications: Series A (Collection of Judgments, 1922-1930)
- PCIJ Publications: Series B (Collection of Advisory Opinions, 1922-1930)
- PCIJ Publications: Series A/B (Collection of Judgments, Orders and Advisory Opinions, 1931-1946)
- PCIJ Publications: Series C (Acts and Documents Relating to Judgments and Advisory Opinions Given by the Court)
Compliance with each decision is determined based on news sources such as the New York Times, Facts on File, Keesing's Contemporary Archives, Lexis-Nexis Academic Universe, diplomatic histories of the involved countries or regions, and reference works such as the Encyclopedia of International Boundaries (Biger 1995) and Jane's Exclusive Economic Zones of the World (Pratt 2000). The claimants are coded as complying with a decision when both sides accept and implement the terms of the decision, which typically involve the end of the territorial, river, or maritime claim in question. The results are as follows:
Did Both Claimants Comply with Decision? |
Territorial Claims |
River Claims |
Maritime Claims |
Total |
Yes | 15 (93.8%) | 2 (66.7%) | 8 (80.0%) | 25 (86.2%) |
Yes (appeal) | 1 (6.3) | 0 (0.0) | 2 (20.0) | 3 (10.3) |
No | 0 (0.0) | 1 (33.3) | 0 (0.0) | 1 (3.4) |
Total | 16 | 3 | 10 | 29 |
As this table indicates, the ICJ and PCIJ have been very effective at issuing decisions that both sides carry out. Of the 29 awards that had been handed down as of May 2007, only one (3.4%) -- the 1997 decision over the Gabcikovo-Nagymaros dam project, which is still the subject of negotiations intended to produce compliance -- has not been complied with by both parties. Three other cases (10.3%) saw a subsequent appeal to the court, but were ultimately complied with by both sides, and the remaining 25 (86.2%) were accepted by both parties without any further litigation.
It should also be noted that the ICJ and PCIJ have not been used exclusively by Western democracies, which might account for this observed success if most or all cases were submitted by democratic states (which are widely known to be unlikely to fight each other, and to share norms of peaceful conflict management). These 29 completed cases, along with the six cases that are still pending as of May 2007, come from a wide range of geographic settings and political systems. This includes the following geographic breakdown:
- Europe: 13 (37.1%)
- Western Hemisphere: 9 (25.7)
- Sub-Saharan Africa: 6 (17.1)
- Middle East and North Africa: 4 (11.4)
- Asia and Oceania: 3 (8.6)
Barely one-third of these cases involved disagreements in Europe, and many of these involve such claimants as Albania, Hungary, Poland, Romania, and the Ukraine. These cases also include a variety of non-democratic actors, using the widely accepted measurement of democracy as states with values of 6/10 or higher on the Polity IV index of institutionalized democracy, and compliance is still the dominant approach whether a given dyad has no, one, or two democracies:
Did Both Claimants Comply with Decision? |
Neither Democratic |
One Democratic |
Both Democratic |
Total |
Yes | 7 (77.8%) | 5 (100%) | 13 (86.7%) | 25 (86.2%) |
Yes (appeal) | 2 (22.2) | 0 (0.0) | 1 (6.7) | 3 (10.3) |
No | 0 (0.0) | 0 (0.0) | 1 (6.7) | 1 (3.4) |
Total | 9 | 5 | 15 | 29 |
In short, it seems clear that these international institutions have been used by a wide variety of states to settle contentious issues. Furthermore, once an award has been made, it is very likely to be carried out, even if one or both claimants are not advanced Western democracies. We believe that this global analysis of compliance with decisions from the most prominent international court is consistent with our article's argument that the involvement of international institutional increases compliance, and that this supplements our article's more in-depth empirical analysis of compliance with agreements over territorial, river, and maritime issues in a smaller spatial-temporal domain.
List of Cases
Territorial Issues (including mixed territorial/maritime) | |||
Award Date | Claimants | Subject | Did Both Comply? |
07/2005 | Benin / Niger | Frontier Dispute | Yes |
12/2002 | Indonesia / Malaysia | Sovereignty over Pulau Ligitan and Pulau Sipadan | Yes |
10/2002 | Nigeria / Cameroon, Equatorial Guinea intervening | Land and Maritime Boundary between Cameroon and Nigeria (see also 03/1999 judgment on Request for Interpretation of 1998 judgment on preliminary objections) | Yes |
03/2001 | Qatar / Bahrain | Maritime Delimitation and Territorial Questions between Qatar and Bahrain | Yes |
12/1999 | Botswana / Namibia | Kasikili / Sedudu Island | Yes |
02/1994 | Libya / Chad | Territorial Dispute [Aozou Strip] | Yes |
09/1992 | El Salvador / Honduras, Nicaragua intervening | Land, Island and Maritime Frontier Dispute (subsequent Application for Revision of the Judgment... rejected 12/2003) | Yes (appeal)1 |
12/1986 | Burkina Faso / Mali | Frontier Dispute | Yes |
06/1962 | Cambodia / Thailand | Temple of Preah Vihear | Yes |
11/1960 | Honduras / Nicaragua | Arbitral Award Made by the King of Spain on 23 December 1906 | Yes |
06/1959 | Belgium / Netherlands | Sovereignty over Certain Frontier Land [Zondereygen] | Yes |
11/1953 | France / United Kingdom | Minquiers and Ecrehos | Yes |
04/1933 | Norway / Denmark | Legal Status of Eastern Greenland (see also Legal Status of the South-Eastern Territory of Greenland) | Yes |
11/1925 | UK / Turkey | Interpretation of Article 3, Paragraph 2, of the Treaty of Lausanne [Mosul] | Yes |
09/1924 | Yugoslavia / Albania | Monastery of Saint-Naoum | Yes |
12/1923 | Poland / Czechoslovakia | Jaworzina | Yes |
River Issues | |||
Award Date | Claimants | Subject | Did Both Comply? |
09/1997 | Hungary / Slovakia | Gabcikovo-Nagymaros Project | No2 |
06/1937 | Belgium / Netherlands | Diversion of Water from the Meuse | Yes |
09/1929 | Germany et al. / Poland | Territorial Jurisdiction of the International Commission of the River Oder | Yes |
Maritime Issues (mixed territorial/maritime listed above) | |||
Award Date | Claimants | Subject | Did Both Comply? |
06/1993 | Denmark / Norway | Maritime Delimitation in the Area between Greenland and Jan Mayen | Yes |
11/1991 | Guinea-Bissau / Senegal | Maritime Award (subsequent Maritime Delimitation between Guinea-Bissau and Senegal case ended by 11/1995 discontinuance of proceeedings) | Yes (appeal)3 |
06/1985 | Libya / Malta | Continental Shelf | Yes |
10/1984 | Canada / United States | Delimitation of the Maritime Boundary in the Gulf of Maine Area | Yes |
02/1982 | Tunisia / Libya | Continental Shelf (subsequent Application for Revision and Interpretation rejected in 12/1985) | Yes (appeal)4 |
07/1974 | UK / Iceland | Fisheries Jurisdiction | Yes |
07/1974 | West Germany / Iceland | Fisheries Jurisdiction | Yes |
02/1969 | West Germany / Denmark | North Sea Continental Shelf | Yes |
02/1969 | West Germany / Netherlands | North Sea Continental Shelf | Yes |
12/1951 | UK / Norway | Fisheries | Yes |
Currently Pending Cases | |||
Award Date | Claimants | Subject | Did Both Comply? |
(Pending) | Nicaragua / Honduras | Maritime Delimitation between Nicaragua and Honduras in the Caribbean Sea | N/A |
(Pending) | Nicaragua / Colombia | Territorial and Maritime dispute | N/A |
(Pending) | Malaysia / Singapore | Sovereignty over Pedra Branca/Pulau Batu Puteh, Middle Rocks and South Ledge | N/A |
(Pending) | Romania / Ukraine | Maritime Delimitation in the Black Sea | N/A |
(Pending) | Costa Rica / Nicaragua | Dispute regarding Navigational and Related Rights | N/A |
(Pending) | Argentina / Uruguay | Pulp Mills on the River Uruguay | N/A |
Notes
1 The 1992 ICJ decision in the El Salvador-Honduras case has generally been accepted and carried out by both sides. A decade after the award, El Salvador appealed to the ICJ on the basis of newly discovered documents that might have affected a small portion of the overall award, but the ICJ rejected this appeal in December 2003 and upheld the original award.
2 The 1997 ICJ ruling in the Gabcikovo-Nagymaros case found both Hungary and Slovakia at fault, as both Hungary's unilateral withdrawal from the 1977 agreement over the dam project and Slovakia's unilateral decision to go ahead with Variant C of the project were ruled illegal. Compliance is coded as no rather than pending because it has been more than five years since the award was issued, although talks have occurred between the claimants over a mutually satisfactory way to execute the ICJ ruling.
3 Guinea-Bissau initially pressed its case over the maritime question following the November 1991 ICJ decision, through both bilateral negotiations and a further ICJ case. Both sides are considered to have complied with this decision, though, as Guinea-Bissau withdrew its objections and successfully requested the discontinuance of further ICJ proceedings in 1985.
4 The 1982 ICJ decision in the Libya-Tunisia case is considered to be complied with by both sides. A Tunisian request for revision and interpretation was addressed by a followup ICJ ruling in December 1985, which rejected the request for revision and issued the requested interpretation and clarification, and the matter has subsequently been considered resolved.
Excluded Cases
This table excludes the following cases, which involved advisory opinions rather than decisions over contentious cases:
- 10/1975: Mauritania / Morocco, Western Sahara (The ICJ ruled that before Spain occupied the territory its residents had ties to both Morocco and Mauritania - thus, there is no award that the two sides could have complied with.)
- 06/1971: Legal Consequences for States of the Continued Presence of South Africa in Namibia (South West Africa) notwithstanding Security Council Resolution 276 (The advisory opinion was requested by the UN Security Council, and does not reflect a codable territorial claim.)
- 06/1956: Admissibility of Hearings of Petitioners by the Committee on South West Africa (The advisory opinion was requested by the UN General Assembly, and does not reflect a codable territorial claim.)
- 06/1955: Voting Procedure on Questions relating to Reports and Petitions concerning the Territory of South West Africa advisory opinions (The advisory opinion was requested by the UN General Assembly, and does not reflect a codable territorial claim.)
- 07/1950: International Status of South West Africa (The advisory opinion was requested by the UN General Assembly, and does not reflect a codable territorial claim.)
This table excludes the following cases where the Court granted a request for discontinuance of proceedings in the case:
- 10/1992: Finland / Denmark, Passage through the Great Belt
- 01/1933: Italy / Turkey, Castellorizo-Anatolia Territorial Waters
This table excludes the following cases where the Court decided that it did not have jurisdiction or otherwise could not hear the case:
- 12/1998: Spain / Canada, Fisheries Jurisdiction
- 06/1995: Portugal / Australia, East Timor [maritime delimitation]
- 12/1978: Greece / Turkey, Aegean Sea Continental Shelf
- 12/1963: Cameroon / UK, Northern Cameroons
- 03/1956: UK / Argentina, Antarctica
- 03/1956: UK / Chile, Antarctica
This table excludes the following cases, which did not directly address territorial, river, or maritime claims (although they may have been related to such claims):
- 02/2005: Liechtenstein / Germany, Certain Property (concerns compensation for seized property)
- 09/1993: Nauru / Australia, Certain Phosphate Lands in Nauru (not a territorial sovereignty issue)
- 12/1988: Nicaragua / Honduras, Border and Transborder Armed Actions (This case involved cross-border incidents but not a territorial claim.)
- 08/1987: Nicaragua / Costa Rica, Border and Transborder Armed Actions (This case involved cross-border incidents but not a territorial claim.)
- 07/1966: Liberia and Ethiopia / S.Africa, South West Africa (see also the original Ethiopian South West Africa case which was merged with this Liberian case) (Neither Liberia nor Ethiopia had a territorial claim to Southwest Africa.)
- 04/1960: Portugal / India, Right of Passage over Indian Territory (This case concerned transit rights, not territorial sovereignty.)
- 04/1949: United Kingdom / Albania, Corfu Channel (involves compensation rather than navigation)
- 02/1939: Estonia / Lithuania, Railway Case (economic concession, not sovereignty)
- 06/1938: Italy / France, Morocco Phosphate Concessions (not a sovereignty issue)
- 04/1935: Greece / Albania, Minority schools (minority rights, not sovereignty)
- 03/1934: France / Greece, Lighthouses in Crete and Samos (econ. concession)
- See also 12/1937 followup
- 12/1933: Germany / Poland, Agrarian Reform and the German Minority (not sovereignty)
- 05/1933: Hungary / Czechoslovakia, Peter Pazmany University (restitution, not sovereignty)
- See also 12/1933 followup
- 08/1932: Great powers / Lithuania, Memel Statute (economic questions, not sovereignty)
- 10/1931: Lithuania / Poland, Railway Traffic (transit rights, not sovereignty)
- 12/1930: France / Switzerland, Upper Savoy / Gex (economic questions, not sovereignty)
- See also 06/1932 followup
- 07/1930: Greece / Bulgaria, Greco-Bulgarian "Communities" (not sovereignty)
- See also 03/1932 followup
- 04/1928: Germany / Poland, Upper Silesia Minority Rights (not sovereignty)
- See also 05/1931 German Schools case
- 12/1927: Great powers / Romania, Danube Commission Jurisdiction (none of the great powers in question was a Danube riparian, and there does not appear to be a qualifying claim)
- 05/1926: Germany / Poland, Interests in Upper Silesia (compensation, not sovereignty)
- See also 11/1927, 12/1927, and 09/1928 Chorzow Factory cases
- 05/1925: Germany / Poland, Polish Postal Service in Danzig (functional, not sovereignty)
- See also 03/1928, 08/1930, 12/1931, 02/1932, 12/1935 Danzig cases
- 02/1925: Greece / Turkey, Exchange of Populations (not sovereignty)
- See also 08/1928 followup
- 11/1923: UK / France, Nationality Decrees in Tunis and Morocco (not sovereignty)
- 09/1923: Germany / Poland, German Settlers in Poland (not sovereignty)
- See also 09/1923 Acquisition of Polish Nationality case
- 07/1923: Finland / Russia, Eastern Carelia (this case concerns minority rights rather than sovereignty)
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Last updated: 30 July 2018
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