Good question...
Well I don't know, I mean it states that the overall cost of war in Iraq is about 350$ billion and is continuing to go up + pentagon spending already topped 500$ billion....the kind of war U.S. is dealing with are cost shitload than any previous wars that U.S. had with, I'm sure, most likely....
If there'd been no war, all of this amount kind of money could've or should've spent on something else for good....I'm having the visions of trillions of dollars in the future being spent for the wars of violence