J.M. Berger is a researcher, analyst and consultant covering extremism, with a special focus on extremist activities in the U.S. and extremist use of social media. He is a non-resident fellow with the Brookings Institution, Project on U.S. Relations with the Islamic World, and author of the critically acclaimed "Jihad Joe: Americans Who Go to War in the Name of Islam," the only definitive history of the U.S. jihadist movement, and co-author of "ISIS: The State of Terror" with Jessica Stern. Berger publishes the web site Intelwire.com and a contributor to Politico and Foreign Policy. His writing has appeared in The New York Times, The Atlantic, The Daily Beast, Foreign Policy, the CTC Sentinel, the New York Daily News and the Boston Globe, and on National Public Radio, Public Radio International and the National Geographic Channel. Berger has discussed terrorism and extremism on CNN, Fox News and many other radio and television outlets. In addition to writing for the media, Berger consults for and trains private companies and government agencies on issues related to homegrown terrorism, online extremism, foreign fighters and advanced social media analysis. He often presents in academic settings and was, most recently, keynote speaker and a panelist at the annual conference of the Society for Terrorism Study, hosted by the University of Massachusetts.