In 2007, U.S. forces investigated the backgrounds, nationalities, professions and ages of more than 600 foreign fighters who entered Iraq with the intention of taking on suicide missions. Experts discuss the underlying psychology behind the men and women who carry out these attacks.
Karen DeYoung, senior diplomatic correspondent and an associate editor for The Washington Post; author of the article "Papers Paint New Portrait of Iraq's Foreign Insurgents"
Robert Pape, author of Dying to Win: The Strategic Logic of Suicide Terrorism; professor of Political Science at the University of Chicago
Mia Bloom, author of Dying to Kill: The Allure of Suicide Terror; professor of international affairs at the University of Georgia