What is the Japanese surrendered conditionally before the Soviets, the Americans, the British all met in Potsdam to demand the Japanese unconditional surrender. It really depends on what date, perhaps around the time of Iwo Jima or even Okinawa, Emperor Showa realizes the cost of human lives in the Pacific War and decides to back out of it. I think he might be able to keep Korea, Taiwan, and just maybe Manchuria. Japanese beggars cannot be Japanese choosers,. What are your thoughts?