On behalf of the OAU, Obasanjo held a conference at Kano to mediate the Chadian Civil War. Several factions agreed to a ceasefire, to form a government of national unity, and to allow Nigerian troops to act as peacekeepers. The war nevertheless continued and Nigeria responded by cutting off its oil supply to Chad. A second conference on the conflict took place in Lagos in August 1979, resulting in the formation of another short-lived transitional government. In the final year of his military government, he headed an OAU mission to resolve the conflict in Western Sahara.