Prime Minister of Thailand largest political party in the lower house or the leader of the largest coalition of parties. In accordance with the constitution, the prime minister can only be appointed twice and is therefore limited to a maximum of two consecutive terms. The post of Prime Minister is currently held by Retired General Prayut Chan-o-cha, since the coup d'état on 22 May 2014. The office of the "President of the People's Committee" (), later changed to "Prime Minister of Siam" (), was first created in the Temporary Constitution of 1932. The office was modeled after the Prime Minister of the United Kingdom,
Prime Minister of Vietnam 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. Pham Van Dong, the second Prime Minister of Vietnam, served as North Vietnamese Prime Minister from 1955 until 1976, when he became prime minister of a unified Vietnam, and then until 1987, when he resigned. At his resignation, he was the longest-serving prime minister in Vietnamese history, and the oldest serving prime minister in the world. He often lamented