The Allies had chosen a big and crucial step in Asia- Pacific, in relation to the war. The Allies had stopped the Japanese Emperor from expanding its emperor by dropping two atomic bombs. However, this decision had two edges. In relation to the war, the Allies were successfully end the war, which could had been extended into post- war condition, full of hostility and confrontation. In the other hand, there were also judgments that could be used to reconsider the decision to drop the atomic bombs.
Soon, after the war had been tensed down and Japan was in losing position, the Allies, especially US, had to be able to handle this vacuum condition. This vacuum condition opened a wide door for USSR to take control in Asia Pacific. However, since US dropped the atomic bombs, this vacuum condition ended, Japanese surrendered under US terms, and USSR failed to enter Asia Pacific.
The failure of USSR to enter Asia Pacific buried any chance of post- war condition. James Byrnes, US Secretary of State in 1945, ever said "... I would have been satisfied had the Russians determined not to enter the war against Japan. I believed the A- bomb would be successful and would force the Japanese to accept surrender on our terms. I feared what would happen when the Red Army entered Manchuria."
However, the dropping of the atomic bombs was too much for Japan. The Japanese was already in critical position of losing, and ready to surrender. Therefore, there was no need to use the atomic bombs. Besides that, a bomb could have been enough for Japan to completely surrender. Unfortunately, US dropped the two atomic bombs simultaneously, rather than waiting for Japanese to surrender. Admiral Leahy, US navy, advisor of President Truman in 1945 commented on this, "It...