The Cripps Mission was a failed attempt in late March 1942 by the British government to secure full Indian cooperation and support for their efforts in World War II. The mission was headed by a senior minister Stafford Cripps. Cripps belonged to the left-wing Labour Party, which was traditionally sympathetic to Indian self-rule, but he was also a member of the coalition War Cabinet led by British Prime Minister Winston Churchill, who had long been the leader of the movement to block Indian independence.