BTW JayDee, the Manhatten project did not effect the war what so ever, except maybe lengthen it by 3 months.
Arround August '95, the British Home Office & Foreign office, released many 1000s' of documents (classified under the official secrets act),pertaining to the war, as their 50 year status had expired - There maybe many other secrets about the war, we have yet to find out about, as apparently there are many other documents that were classified for 100 years.
What happened was that when the Germans invaded Poland, the Russians moved in & took the Eastern half - Mad Adulf & Uncle Joe had got Ribbentrop & Molotov to work this senario out, when they were together signing their little non-agression pact, earlier on. After the invasion the Poles formed a 'Goverment in Exile' in France, which later moved to the UK. The Western allies recognised them as the official Polish goverment. Meanwhile the Russians had made their own Polish Communist cronies form their own Polish Goverment in Eastern Poland, which they had intergrated into USSR as another Soviet Republic (well what was left of Eastern Poland after they gave a bit to the Belarus SSR, & another bit to the Ukrainian SSR). Well after Operation Barbarossa (the German invasion of Russia), these Polish communists were forced to run back to Uncle Joe in Moscow, & form their own Polish 'Goverment in Exile' in Russia proper. So now we had 2 Polish Goverments in exile.
Well any way, during their many pow-wows together, FDR, Winnie & Uncle Joe finally agreed that the post war Polish Goverment should include representitives from both Polish pretenders, in London & Lublin. By arround the Summer of '44 Hitler's panzers were in full retreat & there were already Soviet T34s' rolling into the suburbs of Warsaw, across the Vistula from Warsaw proper. The Russian radio stations were beaming across the frontier telling the Poles to revolt, to speed up their liberation from the Nasis'. The Polish exiles in London saw their chance & ordered the Home Army in Poland to revolt against the German occupiers. A funny thing then happen, the Red Army all of a sudden ground to a halt at the Vistula, thereby giving the Germans a free hand to crush the Warsaw Uprising. Once the Uprising was over the Russian T34 tanks then moved forward again & 'liberated' Warsaw. Stalin then 'forgot' about his agreament, & had his Lublin exiles form a goverment on their own. When some of the London exiles flew over to join them, having no Home Army to protect them, they promptly dissappeared. Winnie & FDR (& later Truman) were enraged.
Meanwhile in the Pacific, things weren't going well for the Japanese, & by the early Summer of '45 & the German defeat, they knew there time was up. So the Imperial Goverment started to send out surrender feelers to the allies, via the Russian & Swiss Embassies (Russian did not enter the war with Japan till August) - this was 3 months before Hiroshima. They included only one condition amongst their surrender terms - that they be aloud to keep their Emporer. These were rejected, even though (as the secret war ministry documents show) the US had already decided that the Japanese could keep their Emporer after the war; as it would then be less likely for a communist Goverment to form there. Seeing as Stalin had agreed years earlier, that he would enter the war against Japan, 3 months after Germany surrended, you can see why Truman & Churchill were so concern. Especially when you considered what happened with Poland.
Well any way beacause of what Stalin did to Poland, Churchill & Truman decided to show that they had 'Mojo' to equal Stalins red Army 'Mojo' (you got to remember that the Western Armies were nothing compared to the Red Army then - to every German Soldier fighting the Western allies, there were another 10 fighting on the Eastern front - there was no way even D-Day would have been successful if the Russians werent tying down so many German men. Plus the allies had nothing to compare with the 1000s' of Russian T34, KV & JS tanks, other than almost obsolete Shermans, & much smaller numbers too.). So Churchill obliterated Dresden with his 'Mojo' - RAF's Bomber Command, & Truman was advised by Stimson or paterson (I forget which) to reject Japans surrender feelers, so he could demenstrate his 'Mojo', through nuking Hiroshima & Nagasaki.
The War Ministry papers also show that the nukes, were not even the main reason for their unconditional surrender to the US, but just a face saving way out, as the Russians had by now entered the war against Japan & Marshal Zukhov's Red armies had just Blitzkreiged the whole of Manchuria & Korea, & also crossed over & taken Sakhalin & the Kuril Islands, so were now within sight of Japan itself. After taking 2 million Japanese prisoners, including over 150 generals & 'liberating' more land from Japanese occupation than the Americans, Australians & British had in the previous 4 years of war. There was one thing the Japanese top brass feared more than unconditional surrender to the Americans, & that was an invasion by the Red Army.
Another swaying facter in the droping of the bomb was that it cost 2 billion to develop, & Truman was worried what the publics reaction would be if the secret of the bomb (& its cost) ever came out, without him actually using it. Afterall news of the Baatam death march, etc, had just filtered through to the American public in the preceeding months.
War is war, & the reality is there's no rules in war but the rules of the victors. Afterall Dresden, Hiroshima & Nagasaki was just as bad as any of the 'war crimes' of the Nasis or the Nips - mind you, revenge is sweet.
Thats why I dont beleive Japan should have to pay compensation for war crimes (such as what the British veterans & the Korean woman want), otherwise the US should have to pay compensation for the nukes, & the Brits for Dresden etc. Also it was up to the goverments of the day to set reparation claims when Japans signed formal peace traeties with the 48 allied nations in '52. In other words the Korean Women & the British veterans etc should really be now sueing their own goverments now & not Japan.
BTW, this is not revisionist history as I'm not trying to put todays slant on past events, using modern attitudes. As I said before this all came out when the British war ministry released many documents that were classified under the 50 year rule.