Some Burmese nationalists saw the outbreak of World War II as an opportunity to extort concessions from the British in exchange for support in the war effort. Other Burmese, such as the Thakin movement, opposed Burma's participation in the war under any circumstances. Aung San with other Thakins founded the Communist Party of Burma (CPB) in August 1939. Aung San also co-founded the People's Revolutionary Party (PRP), renamed the Socialist Party after World War II. He was also instrumental in founding the Freedom Bloc by forging an alliance of Dobama Asiayone, ABSU, politically active monks and Ba Maw's Poor Man's Party.