“God says differently.” I doubt that God objected to our violence with the Germans and Japanese. I see little difference now except our apparent passivity and accomodation with muslims. How long do we wait before we get our backs up?
When we have to go to war, then we have to go to war. But there are many former Muslims that would tell you the same thing: we need to open our mouths about the Gospel and let God do the rest.
Are you saved? That is to say, have you asked Jesus to save you? No mean no offense, but you speak as a humanist; as if you have no orientation to a Christian worldview.