Ho Chi Minh, who also served as the country's President, was appointed Vietnam's first prime minister in 1946 by the National Assembly, after having served months as Acting Chairman of the Provisional Government and foreign minister in the aftermath of the 1945 August Revolution. Both the 1946 and 1959 Constitutions state that the National Assembly had the power to appoint and relieve the prime minister of his duties. The prime minister presided over the Council of Ministers, the highest executive body of state, from 1981 until it was renamed to Government in the 1992 constitution. The office of prime minister was renamed in the 1980 constitution to that of Chairman of the Council of Ministers.