Favor to ask some of you. Please stop referring to "Japs" when you're talking about the Japanese. It is not neccessary. For some it is offensive. That War's over

( I am half-Japanese from my mother's side ) Thanks in advance.
I don't think warning the Japanese to watch out for "something special" is neccessarily the most prudent move. No telling what interceptors they might have for the waiting reception.
The first one dropped on Japan I don't object to at all. That war was a total war. I'd bet any of the major combatants would have used it on the other side to get a surrender (had they had the capability to deliver it also).
The second one was totally unneccessary IMHO at least for the reasoning of having the other side surrender unconditionally.
The second one was to demonstrate our capabilty to the Soviets, my guess.
Speaking to my Japanese relatives and friends, I got the impression of not a fanatical, suicidal populace willing to go do battle with the invaders, but of total fear of their lives. They believed the American soldiers to be devils that would rape and kill them. Some of them would commit suicide rather than face that "evil." Swords, knives, and spears are no match against an army bearing modern firearms.
Atomic bombings, fire bombings, conventional bombings all that level whole cities and towns are tragic. Sad what humans would do to each other out of hate. That's war for you.
These 20/20 arguments are kind of silly. What's happened we can't change. We can only hope we learn from our mistakes and successes to improve our lot.
Regards.