The laws of karma apply even to war, perhaps esp so. Whatever you do unto others you invariably also do to yourself. Wage war against another, become the war yourself.
My Dad was a veteran of 3 wars and he and I independently came to that same conclusion even as the recent Iraq war was initiated. Vietnam in the sand.
There are far more that commit suicide than would ever attack Americans with their hatred for what they have become. A PTSD case might go postal, and slide off into a delusional flashback temporary.
....And, there were those who came, (even) before you, two, who recognized War (in-general) for what it was.