Chad 24°E. Chad is bounded to the north by Libya, to the east by Sudan, to the west by Niger, Nigeria and Cameroon, and to the south by the Central African Republic. The country's capital is from the nearest seaport, Douala, Cameroon. Because of this distance from the sea and the country's largely desert climate, Chad is sometimes referred to as the "Dead Heart of Africa". The dominant physical structure is a wide basin bounded to the north and east by the Ennedi Plateau and Tibesti Mountains, which include Emi Koussi, a dormant volcano that reaches above sea level. Lake Chad,
Niger Armed Forces the African Union, Niger defense forces have been involved in multiple missions in the Africa and the West Africa. Niger has been a supporter and volunteered to participate in the African Union future rapid intervention forces. In addition, with the growing threat of Boko Haram, defense forces of Niger, Nigeria, Cameroon and Chad have intensified cooperation to address the trans-border threat of this organization. U.S. and France defense cooperation with Niger has intensified post 9/11 as part of the Global War on Terror. The Niger defense forces along with forces from Chad, Mali, Mauritania have become major partners of France