Nu was one of the leaders of the Anti-Fascist People's Freedom League (AFPFL) from 1942 to 1963. The AFPFL had two groups of power. Nu's group won the 1960 election. He then became prime minister. On 2 March 1962 General Ne Win took control of the government. Nu was then kept in an army camp. Nu continued to claim he was the legal prime minister. In 1988 he tried to form his own government with Win Maung as president.