AFAIK, their war lay primarily in the Pacific, and beyond supporting the Brits and Russians materially, I’m not really sure why the US would want to involve themselves physically in the European theatre. I do feel fear of Germans beating them to the bomb might have something to do with it, but that’s just conjecture.
Which is why we dropped the bombs in Japan. Russia entered into a war with Japan after Germany fell, and their invasion of Japanese colonial territories was swift and decisive. Several historians have found evidence that it was this decisive victory by Russia that pushed Japan to accept surrender. There was a deal being brokered by the United States and Russia at the same time plans were being forged to drop the bombs. The deal would have left Japan split, with one side being under the jurisdiction of Russia while the other being under the jurisdiction of the US. The bombs ended up being the plan, and dropping them was effectively the same as having boots on the ground. The plan with Russia was dismissed, and all surrender terms were dictated by the US as a result.
That's my understanding, anyway. I could have some of those facts wrong, so let me know if they are.
my understanding of the use of nuclear weapons on japan is more related to threatening the ussr. the japanese didn't want to surrender to the soviets at all; they were concerned about being tried for crimes and saw the us as a more sympathetic power to surrender to. dropping the bombs showed the ussr what the us was able to do to a population without expending a single soldier. and the ussr did not have equal power to respond with.
💀 boy https://www.youtube.com/watch?v=RCRTgtpC-Go
Yes, I think we generally agree here. What seems clear from archived information from Japan is that its leaders were not concerned with another bomb (even if it was nuclear.) By that point, 68 cities in Japan had been bombed by US conventional air raids. The destruction was incredible, some of the most destructive bombing of individual cities history had seen up to that point. However, it wasn't until the USSR broke their neutrality pact and invaded Manchuria that the leaders met and began discussing unconditional surrender. For some time, Japan had entertained the idea of having Stalin act as a moderator for negotiations between Japan and the US. Once the Soviets entered into war, that option was gone. Japan was also prepared to defend an invasion from the Allies from the south, but knew they could not defend from both the Soviets and the US on two fronts. This appears to be what caused Japans leaders to meet and discuss unconditional surrender.
Stalin apparently suggested to Truman that they would invade Manchuria on August 15th. This was known before the US dropped the bombs on Hiroshima and Nagasaki. There is some evidence that the US, on hearing this news, anticipated this would lead to Japans unconditional surrender. The US had a planned ground invasion (Operation Downfall) but it was slated for November. My understanding is they were having a hard time getting material support from the UK, France, etc. because of how much longer they had been in the war. From Truman's perspective, conventional bombing was making zero progress towards ending the war with Japan, as its leaders seemed content to let it continue.
As it became more clear over time that Japans situation was deteriorating, it became more obvious that Russia entering into war with Japan was to cause them to surrender. There is evidence that over time, this changed the dialog internally from strategic and tactical use cases for the bomb to political use cases. They believed that use of the bomb would end the war before Russia made much headway in Manchuria. They believed that using the bomb would ensure they do not have to share victory over Japan with Russia. Furthermore, they thought the bomb was a way to strengthen America's diplomatic hand not only in the Far East but in negotiations over the fate of Europe in general, and Eastern Europe in particular. James Byrnes' view on the matter was that possessing and demonstrating the bomb would make Russia “more manageable” in Europe.
The bomb was ultimately dropped on August 6th, The Soviets invaded Manchurian on midnight August 9th, and the second bomb hit Japan later that morning. It's clear that the bomb dwarfed the significance of the Soviets invasion, at least in the public eye and the eye of American history, but it wasn't lost on the leaders of Japan.
You're definitely right about concerned surrounding war crimes. The trials were already underway regarding Germany when the bombs were dropped. I'm not sure if they saw the US as a more sympathetic power, however, it seems clear that Japanese leaders utilized the spectacular nature of the two atomic bombs as a cover for their failings. This cover worked twofold, it allowed them to save face with the Japanese public, who had very little information about the effectiveness of Japans war generally, while also stroking the Americans ego. If the specular shock and awe of this unforeseen weapon of mass destruction was the origins of unconditional surrender, then it wasn't because of their poor handling of the war. The Japanese leadership utilized the horrors of these bombs to obscure the horrors they were guilty of. This ultimately strengthened the US's position as having redefined the nature of war, giving them what they desired: More influence over post-war Japan, and influence across Europe as a whole.
yeah this seems like the fuller picture i've heard before. thanks for adding all the context.
lets get the timeline straight and the collusion of the allies clear: the atomic bomb was used august 6th. the soviets invaded august 8th. both events were essentially known to both parties; the US had alluded to a new weapon, the Soviets were obliged to enter within a 3 months deadline after VE. the US had specifically began a supply mission to assist Soviet operations in the theater (Project Hula). atomic weapons as a response to Soviet success is utterly unfounded. the bombs being a substitute for invasion is also unsupported, as far as the US warplanners knew they still might've had to invade, for which additional nukes were planned as beachhead weapons.
neither were the Soviets excluded from the peace. Soviet soldiers were not used to occupy the Home Islands (they liberated/accepted surrender north China/Korea) but participated in the allied occupation administration, securing left wing reforms and legality for the communists. these were reversed in '47, not exactly immediately.
I wasn't aware of their involvement in the Allied occupation of Japan, that's interesting. I'll add it to my list of things to learn about