Cameroon–Nigeria relations troops from the two countries will cross into Nigeria and fight Boko Haram in collaboration with Nigerian forces." Cameroon–Nigeria relations This article details the foreign relations between Cameroon and Nigeria. For a few years, relations between Cameroon and Nigeria have intensified over issues relating to their 1,600-kilometer land boundary, extending from the Lake Chad to the Bakassi peninsula, and boundary into the Gulf of Guinea. The issues that are involved are rights over the oil-rich land and the fate of local populations. For example, as Lake Chad dried up due to desertification, local populations relying on the lake for their
Colony of Niger Tibesti Cercle ceded to Chad Colony in French Equatorial Africa, and in 1932, the colony of French Upper Volta was divided amongst its neighbors, with the Cercles of Dori and Fada N'gourma ceded to Niger Colony. Niger Colony officials, unlike neighboring Chad, remained loyal to the French Vichy government after 1940, and thus closed its southern border (to Nigeria) and eastern border until 1944. On 31 December 1946 the Military Territories of N'Guigmi and Agadez were ceded to Niger Colony, leaving only Bilma Cercle as the last military-run section of modern Niger. This area in the far north east only