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Uti possidetis

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Title: Uti possidetis  
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Subject: Second Anglo-Dutch War, Status quo ante bellum, Uti possidetis juris, Bolivia–Chile relations, Timeline of the War of 1812
Collection: International Law, Latin Legal Terms
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Uti possidetis

Uti possidetis (Latin for "as you possess") is a principle in international law that territory and other property remains with its possessor at the end of a conflict, unless otherwise provided for by treaty; if such a treaty does not include conditions regarding the possession of property and territory taken during the war, then the principle of uti possidetis will prevail.[1] Originating in Roman law, the phrase is derived from the Latin expression uti possidetis, ita possideatis, meaning "may you continue to possess such as you do possess" (lit., "as you possess, thus may you possess"). This principle enables a belligerent party to claim territory that it has acquired by war.


  • History 1
  • See also 2
  • Footnotes 3
  • Lectures 4
  • Further reading 5


In the early 17th century, the term was used by England's James I to state that while he recognized the existence of Spanish authority in those regions of the Western Hemisphere where Spain exercised effective control, he refused to recognize Spanish claims to exclusive possession of all territory west of longitude 46° 37' W under the Treaty of Tordesillas.

More recently, the principle has been used in a modified form (see Uti possidetis juris) to establish the frontiers of newly independent states following decolonization, by ensuring that the frontiers followed the original boundaries of the old colonial territories from which they emerged. This use originated in South America in the 19th century with the withdrawal of the Spanish Empire.[2] By declaring that uti possidetis applied, the new states sought to ensure that there was no terra nullius in South America when the Spanish withdrew and to reduce the likelihood of border wars between the newly independent states and the establishment of new European colonies.

The same principle was applied to Azerbaijan, Moldova and the former Yugoslavia.[3]

The principle was affirmed by the International Court of Justice in the 1986 Case Burkina-Faso v Mali:

[Uti possidetis] is a general principle, which is logically connected with the phenomenon of obtaining independence, wherever it occurs. Its obvious purpose is to prevent the independence and stability of new states being endangered by fratricidal struggles provoked by the changing of frontiers following the withdrawal of the administering power.

See also


  1. ^ "Uti possidetis Law & Legal Definition". USLegal, Inc. ( Retrieved 16 August 2010. 
  2. ^ Hensel, Paul R.; Michael E. Allison and Ahmed Khanani (2006). "Territorial Integrity Treaties, Uti Possidetis, and Armed Conflict over Territory." Presented at the Shambaugh Conference "Building Synergies: Institutions and Cooperation in World Politics," University of Iowa, 13 October 2006.
  3. ^ Shaw, Malcolm N. (1997). "Peoples, Territorialism and Boundaries." European Journal of International Law 8 (3).


  • Lecture by Marcelo Kohen entitled "Uti Possidetis and Maritime Delimitations" in the Lecture Series of the United Nations Audiovisual Library of International Law

Further reading

  • Sebastian Anstis and Mark Zacher (June 2010). "The Normative Bases of the Global Territorial Order." Diplomacy and Statecraft 21: 306-323.
  • Helen Ghebrewebet: "Identifying Units of Statehood and Determining International Boundaries: A Revised Look at the Doctrine of Uti Possidetis and the Principle of Self-Determination", Verlag Peter Lang 2006, ISBN 3-631-55092-8.
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