J.M. Berger is an analyst and author, and he focuses on extremism, extremist activities in the United States, and extremist use of social media. He works with the Brookings Institution and the Project on U.S. Relations with the Islamic World, publishes the web site Intelwire.com and contributes to Foreign Policy. He recently co-authored ISIS: The State of Terror with Jessica Stern. He can be reached through Ashley […]