Ok, someone brought up Nazis, thread over.
Um, the big problem is that you can't really compare a large national war machine with a terrorist war machine. The decentralized organization of terrorists and the way they attack means that trying to occupie a single country wont make the world safe from terrorists. Yes, there is a chance there are fewer terrorists, but this isn't a grunt battle. It only takes a few people to cause a lot of damage, thus we aren't any safer than we were before.
Oh, and it's 50 last time I heard, not 30, with almost 1000 injured.