One of the great intellectual failures of the American intelligence community, and especially the counterterrorism community, is to assume if someone hasn't attacked us, it's because he can't or because we've defeated him.

A nuclear weapon of some dimension, whether it's actually a nuclear weapon, or a dirty bomb, or some kind of radiological device. Yes, I think it's probably a near thing.

No one should be surprised when Osama bin Laden and al Qaeda detonate a weapon of mass destruction in the United States. I don't believe in inevitability. But I think it's pretty close to being inevitable.

Michael Scheuer Quotes