That was early on in the war.  By the time we had the nukes, most of the general populace was opposed to continuing the war.  A blockade would have done just as well without the casualties.
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	Many of the citizens wanted to stop but their leader wouldn't stop.
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	Wasn't even their "leader". Hirohito was opposed to the war from day 1. It was the other politicians who were threatening a coup.
 
										 
					 
		    