I'll call BS on your 10,000 casualty figure. Let's look at the estimates here:
-Gen. Lauris Norstad: 500,000 US fatalities
-Joint Chiefs of Staff: for a 90-day campaign, 456,000 casualties and 109,000 dead/missing
-Admiral Nimitz: 49,000 in the first 30 days, with 5,000 of them at sea.
-Gem MacArthur: 23,000 in the first 30 days, 125,000 by 120 days.
-William Shockley on behalf of Secretary of War Henry Stimson: 1.7-4 million American casualties, with 400,000-800,000 fatalities and 5-10 million Japanese fatalities.
-LA Times war correspondent Kyle Palmer: half a million to a million
-Herbert Hoover: half a million to a million
There's a reason we've never had to manufacture any more Purple Hearts. Soviets or not.
Had the US aligned itself with the USSR sooner and declared war on Japan, there is little doubt that the beleaguered Empire would have surrendered.
Doubtful. They were entirely willing to fight on to the bitter end; that's why it took an atomic bomb to get them to stop.