Not that he should be held accountable, but that he could be.
Im not saying anything against Washington, dont want it to seem like that.
What evidence was there of the guilt of hitler, saddam, pol pot, stalin, tojo etc... the trails at the end of WW2 charged the vanquised with starting a war that included war crimes therefore making them guilty because they started the war, under those conditions Bush could be held accountable for Haditha because he started the war.
Does that make sense?