After the war , the Allies rescinded Japanese pre-war annexations such as Manchuria , and Korea became independent . The Philippines and Guam were returned to the United States . Burma , Malaya , and Singapore were returned to Britain and French Indo-China back to France . The Dutch East Indies was to be handed back to the Dutch but was resisted leading to the Indonesian war for independence . At the Yalta Conference , US President Franklin D. Roosevelt had secretly traded the Japanese Kurils and south Sakhalin to the Soviet Union in return for Soviet entry in the war with Japan . The Soviet Union annexed the Kuril Islands , provoking the Kuril Islands dispute , which is ongoing , as Russia continues to occupy the islands
Yalta Conference
Yalta Conference
Aftermath of World War II