"As the MAGIC example dramatically demonstrates, there are serious limits to even the best intelligence. A reasonably smart enemy will deliberately send out contradictory signals and "noise" before any attack. This point applies with special force to modern terrorists, who have a large number of potential targets to choose from. Sooner or later, they will catch us by surprise again.
For these reasons, among others, we cannot win with a purely or even primariy defensive orientation. Ultimately, we have to engage in offensive operations, in order to destroy the enemy before they are able to implement their own attack plans, and so we ourselves cna claim the advantages of surprise and confused intelligence. Offensive strategies certainly have their own risks, and are not a panacea. However, even more than 9/11, Pearl Harbor demonstrates that an exclusively defensive orientation is a guarantee that our enemies will take us by surprise sooner or later - with potentially devastating results."