The Allies wanted Japan to surrender with no terms, but Japan refused. This resulted in the United States dropping two atomic bombs over Hiroshima (August 6, 1945) and Nagasaki (August 9, 1945). On August 8, 1945, the Soviets invaded Manchuria, quickly defeating the primary Imperial Japanese Army there. On August 15, 1945, Japan surrendered to the Allies. The surrender documents were formally signed on board the "USS Missouri" on September 2, 1945, ending the war.