Emerson Brooking is a fellow at the Atlantic Council and the co-author of "LikeWar: The Weaponization of Social Media."

David Mikics is a professor of English at the University of Houston, and the recent author of "Stanley Kubrick: American Filmmaker."

Peter Marshall is a historian from the University of Sussex and the author of "Demanding the Impossible: A History of Anarchism."

Adam Zamoyski is a historian and the author of several books about Napoleon, most recently, "Napoleon: The Man Behind the Myth."

Peter Fritzsche is a historian at University of Illinois, and the author of several best-selling books, most recently, "Hitler's First Hundred Days: How Germans Embraced the Third Reich."

Marya Hornbacher is a best-selling author of "Wasted: A Memoir of Anorexia and Bulimia" and "Madness: A Bipolar Life".

Jan Swafford is an American composer and the author of biographies of Charles Ives, Brahms, and most recently, "Beethoven: Anguish and Triumph".