The proof of that also lies in Israel. Despite being far and away the strongest military power in the region, who deals with mortar, rocket, and suicide bombers on a near daily basis? Certainly not Iran. Will we fare any different, waiting in our fortress-nation for the world to burn down outside our gates? We can only win, and thereby survive, by taking to the fight to our enemies where THEY live, instead of waiting for the front lines to come to our shores.