The Agacher Strip War (French: Guerre de la Bande d’Agacher) or Christmas War (French: Guerre de Noël) was a war fought by Burkina Faso and Mali over a 160-kilometre-long (100 mi) strip of land along the border in northern Burkina Faso from 25 to 30 December 1985. The war ended in a ceasefire. The Agacher Strip had been subject to a border dispute between Mali and Burkina Faso since the 1960s. Following armed clashes in 1974, both countries agreed to mediation to resolve their differences. Progress on a solution stalled, and in 1983 Burkinabé President Thomas Sankara and Malian President Moussa Traoré decided to have the border dispute settled by the International Court of Justice and subsequently petitioned the body to resolve the issue.