J. M. Berger is a nonresident fellow with the Brookings Institution and the author of Jihad Joe: Americans Who Go to War in the Name of Islam, a critically acclaimed history of the American jihadist movement. He is a regular contributor to Foreign Policy magazine and his website, Intelwire.com, has published thousands of declassified documents on the September 11 attacks and the Oklahoma City bombing.
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A rising tide of extremist movements threaten to destabilize civil societies around the globe. It has never been more important to understand extremism, yet the dictionary definition—a logical starting point in a search for understanding—tells... SEE MORE