Phibun was ousted as Prime Minister by the National Assembly in 1944 and replaced by members of the Free Thai Movement until returning to power in the Siamese coup d'état of 1947 led by the Coup Group. Phibun aligned Thailand with anti-communism in the Cold War, entered the Korean War under the United Nations Command, and abandoned fascism for a façade of democracy. Phibun's second term as Prime Minister was plagued by political instability and was subject to several attempted coup d'etats to remove him including the Army General Staff plot in 1948, the Palace Rebellion in 1949, and the Manhattan Rebellion in 1951. Phibun attempted to transform Thailand into a electoral democracy from the mid-1950s, but was overthrown in 1957 and entered exile in Japan where he died in 1964.