When a non-state actor does it, it is terrorism. When a state actor does it, it is called war crimes.
While a funny quip, states are capable of terrorism. See Hiroshima, Nagasaki, Tokyo, Dresden, the blitz. Ya know I was hoping I would off the top of my head remember more than just WW2 examples, but here we are. I mean, besides Israel at the moment but that’s the topic so doesn’t really fit to the list.
Oh no, let me understand the perspective of people bombing civilians to cause them to lose faith in the local militia group for the sake of colonization and conquest. I’m sure they have a good reason.