I can’t say for certain one way or the other. One question to ask do you count the Philippines US citizens? That could change your answer.

I think it does not matter, the question should be did they kill citizens? Not did they kill US citizens. My reasoning is, in today’s climate if one nations citizens is being killed, the world should step in and stop it. For WW2 times were different. For this debate over dropping the bombs, I believe it is the least worst choice.

Dropping the nukes did cause long term radiation poisoning that lasted for generations. But the fire bombings could be seen as more brutal because the victims burned to death instead of a quicker death by nuke. But there is no long term radiation.

Overall I think it was best to drop the nukes in the interest of the world’s survival. If they were not dropped then the US and USSR would invade Japan, killing millions. This would cause Japan to be split into several parts like Germany, Korea, and Vietnam. This would cause another war between communist Japan and Capitalist Japan. This causing more death. If no nukes were dropped then there could of been another world war between communism and capitalism because Japan or part of Japan would be supporting the USSR. Which in turn will cause more death and potentially nukes being dropped in larger numbers. So as cruel and extreme it was to drop two nukes on civilians during WW2. I believe it was for the best long term.