On this edition of The Week in Review we reflect on lessons learned since that fateful day on September 11th 2001, and get an update and some analysis on our efforts to combat our enemies. Our guest for this hour is Dr. John Arquilla, who chairs the Department of Defense Analysis at the Naval Postgraduate School in Monterey. Dr. Arquilla has also worked as an analyst for the RAND Corporation, and is the author of several books, including Worst Enemy: The Reluctant Transformation of the American Military, and, this year he released Insurgents, Raiders, and Bandits: How Masters of Irregular Warfare Have Shaped Our World.