Niger, officially the Republic of the Niger, is a landlocked country in West Africa. It is a unitary state bordered by Libya to the northeast, Chad to the east, Nigeria to the south, Benin and Burkina Faso to the southwest, Mali to the west, and Algeria to the northwest. It covers a land area of almost 1,270,000 km2, making it the largest landlocked country in West Africa and the second largest landlocked nation in Africa behind Chad. Over 80% of its land area lies in the Sahara.