I am uncertain as to whether I believe the A-bombs ended the war prematurely but have done some googling. I need to get going
But the Soviets were probably the real reason Japan surrendered. New evidence, finally unearthed after six decades, indicates the Japanese wanted to avoid Soviet troops dissecting their island as they had already divided Germany. The Bomb may have had little to do with their submission.
http://www.freepress.org/columns/display/7/2005/1182The Japanese surrendered to an alliance which included the Soviets. Some of the northern home islands of the Japanese could have been handed over to the Soviets.
Either way, the Soviets did not have the naval capacity in the Pacific to launch a major amphibious invasion of the Japanese home islands.
In September 1945 the Joint Chiefs of Staff identified the Soviet Union as the most likely enemy of the United States, helping to focus the efforts of military planners. At first it was unclear how sea power could be brought to bear against the Soviet Union, a land power without even a moderate-sized oceangoing navy that was not susceptible to a naval blockade or a guerre de course waged by U.S. submarines.
http://www.history.navy.mil/history/history4.htmWe get some hard numbers as of the strength of the Soviet Navy here:
...the Soviet Navy (Pacific Fleet and Amur River
flotilla) had distinct superiority on the seas (600 fighting
ships as touted by Gorelov) and an additional 1500 A/C. 38]
It is ludicrous that such a naval force could launch an effective amphibious assault against the home islands. But number crunching is unnecessary, if the United States would not have been ready until November (as the article suggests, it would have taken the Soviets much longer.
The Soviets invaded Manchuria on August 9. Both the United States' and Japan's intelligence did not suspect a Soviet offensive until September at the earliest. Is it possible that Stalin rushed up his time line in the wake of the Hiroshima attack? Japan had only 700K-1M inexperienced and poorly armed troops in Manchuria when Stalin attacked with 1.3 million and 5,000 tanks yet the Japanese put up a determined resistance against the attack that caught them off guard.
Japanese resistance prematurely dissolved due to the surrender of Japan. Japan announced their surrender on August 14 and Japanese command told their military in Manchuria to stand down on August 17. By then, the Soviets had not yet even entered the Korean peninsula, a mountainous region that the Japanese could have regrouped in and put up a determined defense against the Russians. As it stands now, with the great majority of the fighting lasting from August 9 to August 18, over 80,000 Japanese soldiers and 8-20K Soviets were killed with no mention of Manchurian civilians killed in the cross fire. If the Japanese troops and command in Manchuria had not been demoralized by the evaporation of Hiroshima and Nagasaki, the Imperial surrender of August 14 and the orders to end resistance on August 17 it is nearly certain that fierce and determined Japanese resistance would have continued all the way down to the tip of the Korean peninsula. How many more hundreds of thousands Japanese and Russian soldiers, Manchu and Korean civilians would have been killed in the month of August?
http://www.globalsecurity.org/military/library/report/1986/RMF.htmI am still not certain as to whether I believe the A-bombs were strategic in ending the war prematurely but I have to go now.