The Aouzou strip was defined for the first time in the discussions between France and Italy after World War I, in relation to an award to Italy for the victory in that war. At the Paris Peace Conference, 1919, the Kingdom of Italy did not receive any of the German colonies, but instead was given the Oltre Giuba from the United Kingdom, and France agreed to give some Saharan territories to Italian Libya. After many discussions during the 1920s, in 1935 the Franco-Italian Agreement was signed between Benito Mussolini and Pierre Laval, which included a provision under which Italy would receive the Aouzou strip, which was to be added to Libya. France's other motivations in concluding this agreement with Italy were to settle the status of the Italian Tunisian community in its protectorate of the country, to remove irredentist Italian claims to Nice, and to prevent Italy from growing closer to Nazi Germany by keeping it closely aligned with France and the United Kingdom. This policy failed two years later after Italy drifted into the German orbit by concluding the Pact of Steel with Nazi Germany, leading to the "instruments of ratification" of the Mussolini-Laval Treaty never being exchanged with France. Despite this the new border was conventionally assumed to be the southern boundary of Libya until 1955.
History
Claimed to be rich in uranium deposits, the area was the cause of dispute with Libya, which led to a war between the two countries. In 1973, Libya engaged in military operations in the Aouzou Strip to gain access to minerals and to use it as a base of influence in Chadian politics. This ultimately resulted in the Chadian–Libyan conflict. Libya argued that the territory was inhabited by indigenous people who owed vassalage to the Senoussi Order and subsequently to the Ottoman Empire, and that this title had been inherited by Libya. It also supported its claim with an unratified 1935 treaty between France and Italy, the colonial powers of Chad and Libya, respectively, that confirmed the possession of the strip by Italy. The frontier claimed by the Chadian government was based on a 1955 treaty between France and Libya, which, in turn, referred back to an 1899 agreement between Great Britain and France about "spheres of influence". Despite other differences, this was one position on which all Chadian political parties and factions were able to agree. During the so-called Toyota War in 1987, the final stage of the Chadian–Libyan conflict, Chadian forces were able to force the Libyans to retreat from the Aouzou Strip. A cease-fire between Chad and Libya held from 1987 to 1988, followed by unsuccessful negotiations over the next several years. Finally a 1994 International Court of Justicedecision found in favour of Chad sovereignty over the Aouzou strip, and ended the Libyan claim. The United Nations Security Council established the United Nations Aouzou Strip Observer Group in Resolution 915 to monitor the withdrawal of Libyan troops, and terminated it in Resolution 926, when the withdrawal was completed.
