Jon Lewis

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Jon Lewis is a Research Fellow at the Program on Extremism at George Washington University. He studies the effects of leadership decapitation on terrorist organizations and the activities of the Islamic State in Europe and the United States.

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It’s Not Only Iraq and Syria

Nearly a decade ago, five young men from the Washington, D.C., suburbs disappeared. Confusion about their whereabouts caused a panic within the national security community, which was only made worse by their reappearance a few days later when they were arrested in Pakistan for allegedly attempting to join Jamaat-ud-Dawa, the charity wing of Lashkar-e-Taiba, a Pakistani terrorist organization.