Martha Crenshaw is a senior fellow at Stanford University's Center for International Security and Cooperation and the Freeman Spogli Institute for International Studies.
The world of Islamist fighters is deeply fragmented and constantly shifting.
Global / Mar 11, 2015
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The Growing Risk of Suicide in Rural America Mar 10, 2015
The Art of War in 7 Charts Mar 10, 2015
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Obama's America Mar 7, 2015