Aside from nuclear weapons you are describing practically every nation state since ever, especially post Industrial Revolution. To the point that the argument is useless. The US is just as bad as Britain, France, Spain, the Dutch, the history of the Russian empire, Japan, china, the current state of many African counties etc etc!
It’s also worth mentioning how the US is such strong allies with the very country they dropped a bomb on and helped with reconstruction through and beyond the Meiji era and continued to be an ally to Japan…
No one anywhere near this thread is advocating for those thing so what are you getting at other than saying boo! ghosts!? Sooo…
Nothing makes the past okay. Citing the past nihilistically only makes the future worse.
Your opinion of why the US did something only serves to discredit why they should ever do anything or the net benefit of those actions regardless of intent.
The US could help eradicate AIDS, is that evidence of compassion, soft power, or imperialism?
Point is… why argue against eradicating a plague?