Niger–Nigeria relations on the waters of the Niger River and Lake Chad. Both areas face rapid desertification and increasing demands for water. The two nations are members of the Niger Basin Authority (successor to the 1964 Niger River Commission), the Lake Chad Commission, and the "Niger-Nigeria Joint Committee" has special focus on water and water development issues. The two nations are signatories of The Enugu Agreement (3 December 1977) on common regulations for fauna and flora among the member states of the Lake Chad Basin Commission (Cameroon, Niger, Nigeria and Chad). On 15 January 1990 the two nations signed "The Abuja Agreement"
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