>>64066773
https://www.youtube.com/watch?v=RCRTgtpC-Go

The timeline shows the reaction to the nukes did not play much of a role in the decision to surrender. Rather, it had to do more w/ the preservation of the royal family. The USSR would never allow that, while the American's were more amenable to that idea.

Remember, they were willing to sacrifice the whole nation of Japan. Every man, woman and child. Why would two cities be their breaking point?