I'm sure the USA has done much worse to "unarmed survivors" of drug trafficking in the jungles of Columbia. Usually it's done covertly, for a reason. Although I am basing most of my knowledge off of Tom Clancy novels. That being said, there is a reason that is done covertly... whereas if you have the military ordering strikes (captured by video) on unarmed(?) survivors instead of offering quarter, that is an international crime.