Chief Olusegun Matthew Okikiola Aremu Obasanjo, GCFR, is a Nigerian political and military leader who served as Nigeria's head of state from 1976 to 1979 and later as its president from 1999 to 2007. Ideologically a Nigerian nationalist, he was a member of the Peoples Democratic Party from 1999 to 2015, when he quit the Party. from 2018, he went to form a coalition for Nigeria Movement. By 2019, he adopted a new Party, that is, African Democratic Congress.
Born in the village of Ibogun-Olaogun to a farming family of the Owu branch of the Yoruba, Obasanjo was educated largely in Abeokuta. Joining the Nigerian Army, where he specialised in engineering, he spent time assigned in the Congo, Britain, and India, rising to the rank of major. In the latter part of the 1960s, he played a senior role in combating Biafran separatists during the Nigerian Civil War, accepting their surrender in 1970. In 1975, a military coup established a junta with Obasanjo as part of its ruling triumvirate. After the triumvirate's leader, Murtala Muhammed, was assassinated the following year, the Supreme Military Council appointed Obasanjo as head of state.