The part that REQUIRES an offense, but DOES NOT require a defense. Your rationale is incapable of distinguishing between an effective defense, and a situation that requires no defense. You might as well be claiming vicks vapo-rub prevented you from getting cancer.
I guess in your mind we don't have a defense unless we are lobbing artillery rounds into our own backyard. The BEST defense is a good offense, and that is why we are winning the war on terror. We took the fight to the enemy. And we are defeating him on his turf. Sleep well tonight. Brave Americans are fighting far away from you to ensure your safety.