1. Alan Krueger, What Makes a Terrorist: Economics and the Roots of Terrorism (Princeton: Princeton University Press, 2007).
2. Robert Pape, Dying to Win: The Strategic Logic of Suicide Terrorism (Chicago: University of Chicago Press, 2005).
3. Marc Sageman, Leaderless Jihad: Terror Networks in the 21st Century (Pennsylvania: University of Pennsylvania Press, 2007).
4. Omar Nasiri, Inside Jihad: My Life with Al Qaeda (New York: Basic Books, 2006).