> Didn't the Soviet invasion of Manchuria also boxed them in? Some Historians(Paul Hamn for once) have said that was the primary reason for the surrender. The

> Didn't the Soviet invasion of Manchuria also boxed them in? Some Historians(Paul Hamn for once) have said that was the primary reason for the surrender. The Japanese were already expecting a Soviet attack: the only 'unexpected' thing about what the Soviets did was make a move in Summer 1945 instead of Spring 1946. But the Japanese knew what was going to happen eventually.