[tussery]

Originally Posted by CaptainCrunch

Combine that with Roosevelt deciding that the U.S. would accept nothing less then unconditional surrender, there was no diplomatic solution to be had.

Roosevelt was dead before the bombs were ever dropped. It's hard to say if Roosevelt would have actually used the bomb had he lived for the whole war.

Also it is hard to say that the dropping of the bomb was what ended the war. Is it a coincidence that the Japanese surrendered to the Americans just as the Russians were massing for an invasion of Japan. It is possible that the Japanese surrendered to the Americans because they knew they would be easier on them than the Russians.