In Kerry's case it was the case of a broken watch being right twice a day
US officials have been to Dresden, Hamburg, and Berlin before.
Of course, being Kerry, he will say exactly the wrong thing, but he will lance the boil none the less.
I think Hiroshima was the right decision, The Japanese were bat shit and Hiroshima was a legit military target. I also think building the bomb in the first place was a foolish decision. 1/4 of the US economy was wasted on it.