Comment by mrguyorama

>It's terrorism if non-combatants are the target

This is actually insufficient, unless you think the bombing of Berlin was terrorism. If your attack is about primarily about reducing military capability then it isn't terrorism.

Bombing a tank factory staffed entirely by civilians is not terrorism. Launching an expensive cruise missile against a single apartment block is probably terrorism, but if that apartment block houses all the scientists of the Manhattan project, maybe it's not. Bombing a military base isn't terrorism even if you end up killing all the families of the soldiers stationed there.