My argument is that we have every right to take proactive action in self-defense against terrorists and the nations that engage in, support, or harbor terrorists, up to and including the use of military force when it is in our national self-interest to do so. We need not wait until the next 9/11 and the deaths of thousands of Americans (or more) before we protect ourselves. The only people who should be scared are the terrorists and terrorist nations themselves -- and that's exactly the way it should be.
Incidentally, we were indeed attacked on 9/11 with WMDs, not in the form of box cutters, but in the form of Boeing 767 jets loaded with jet fuel.
I think we agree on basics. Every nation has a right to defend itself. I think our leaders think that the Iraq war was "defensive" but not in the way they sold it to us, the American people.
I just hope we find WMD's and don't become the bad boy of the world.