Americans need to come to the realization that the bombings of civilians was really mass murder, not unlike what Nazi Germany and Imperial Japan were guilty of.
Great column on the subject.
Actually, it was just another weapon in war that had seen so many of them built and used.
Most of this Angst after the war came when both the US and USSR built enough bombs to end civilization, and then we got all worked up about it.
I've said this before. The Japanese Empire was the most fanatical enemy the US has ever faced. They make ISIS look like Care Bears. In just over three years, Japan threw 5,000 suicide attacks at Allied forces. They engaged in chemical and biological warfare. They executed Allied prisoners of war and starved thousands more to death.
The application to two, rather small, nuclear devices, killing 170,000 persons, quickly changed Japan from a fanatical, fascist state to pacifist capitalists.
As weapons of war go, this has to be one of the most efficient ever created and quite effective when used on a small scale.