Olusegun Obasanjo is a prominent Nigerian politician and retired military general. He served as the President of Nigeria from 1999 to 2007, becoming the first leader to be elected after the end of military rule. Obasanjo previously held power as a military head of state from 1976 to 1979. His leadership is noted for efforts in economic reform and national unity. In addition to his political career, Obasanjo is also an author and a peace advocate. He has been involved in various international organizations and initiatives, promoting democracy and conflict resolution across Africa. His contributions have made him a significant figure in Nigerian and African politics.