"Reasons to Remember 9-11"

"On Sept. 12, 2001, I wrote in this space: "The first step -- even before military action is contemplated or taken -- is to expel from this country the people and organizations tied to radical terrorist groups in the Middle East."

That is becoming increasingly difficult to do in large part because terrorism is now rarely centered in one location, or under a single banner. The so-called "lone wolf," operating on his own with no paper trail and who is self-radicalized, remains the biggest challenge for those charged with our security.

Radical Islamists appear to be getting help from other nations that hate us, joining forces with them in what they consider a common goal: the destruction of the United States."