Laos and Cambodia weren't participants in the war but that doesn't really feel like it matters all that much. Whenever I talk about the bombings of Cambodia and Laos with Americans (who - liberals and conservatives alike feel they must always defend) I sometimes here "well we bombed cities in Germany and Japan in WW2 and no one talks about those being war crimes". But were they? I really don't know much about those bombings. My gut says yes they were also war crimes but we just accept them because they were combatant countries?
I'm not sure how accurate it is, but I remember hearing that military high-ups who planned and executed the sorties in japan referred to them as "terror bombing raids" in their own words, in written correspondence.
I think maybe this was in the show "untold history of the us" but I could be wrong. I have been meaning to find the show for a while to rewatch, but netflix stopped hosting it and I never decided on a vpn so no torrents yet