Chief Olusegun Mathew Okikiola Aremu Obasanjo, GCFR, Ph.D.  born 5 March 1937 is a former Nigerian Army general who was President of Nigeria from 1999 to 2007. Obasanjo was a career soldier before serving twice as his nation’s head of state. He served as a military ruler from 13 February 1976 to 1 October 1979, and as a democratically elected president from 29 May 1999 to 29 May 2007. From July 2004 to January 2006, Obasanjo also served as Chairperson of the African Union.