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Marc Sageman’s lamenting about the ‘‘Stagnation in Terrorism Research’’ stands in stark contradiction to my conclusion in the Routledge Handbook of Terrorism Research (2011) that ‘‘Terrorism Studies—despite many shortcomings—has matured’’ and that ‘‘Terrorism Studies has never been in better shape than now.’’1 While I agree with much else of what Marc Sageman says, there are a few points I disagree with. To begin with the notion of ‘‘stagnation’’: Terrorism Studies began, with few exceptions (Crozier, 1960; Thornton, 1964; Walter, 1964, 1969; Gaucher, 1965),2 in the 1970s. Yet there had never been a period of real bloom in the 20th century—something which logically should precede the alleged stagnation after 9=11. As Andrew Silke noted in 2006: