Marc Sageman, a former secret CIA agent, has authored a book titled “Understanding Terror Networks.” Sageman, a 51-year-old holder of a PhD in sociology, said in his book that the strong friendship, not religion, was the bond that brought together extremists.


Their love of one another, Sageman added, mingled with their common hatred of the West and that made them join the Al-Qa’ida network, whose modus operandi for recruitment has changed after the Sept. 11 attacks.