The reality is that terrorists can attack any time at any minute, 24 hours a day, using a variety of techniques, in any place at all. And it's not possible to defend in every place, against every technique, against every conceivable approach. It means that you can't stop every terrorist attack. Innocent men, women and children are going to be killed if terrorists are determined to do it.
Donald RumsfeldYou go to war with the army you have, not the army you might want or wish to have at a later time.
Donald Rumsfeld