From an article in the Los Angeles Times. [Registration required.]
But the Sept. 11 attacks have severely undercut containment as a way to handle Hussein, for many reasons. The terrorist attacks on America highlighted dangerous new realities. Geography no longer protects the United States. Individuals and groups are prepared to carry out mass murder against us without the slightest moral scruple; some are willing to sacrifice their own lives in doing so. Even more ominously, there is little reason to believe that the Sept. 11 attackers would not have used weapons of mass destruction had they possessed them.