The Revolutionary Command Council was a twelve-member governing body that ruled the Libyan Arab Republic after the 1969 Libyan coup d'état by the Free Officers Movement, which overthrew the Senussi monarchy of King Idris I. The council's chairman was Muammar Gaddafi, who had the most influence and served as Libya's de facto head of state as Revolutionary Chairman of the Libyan Arab Republic and commander-in-chief of the armed forces. It was ideologically Arab nationalist, republican, anti-imperialist and pan-Arabist.