WALTER LAQUEUR served as the director of the Institute of Contemporary History in London and concurrently the chairman of the International Research Council of CSIS in Washington for 30 years. He was also a professor at Georgetown University and the author of more than twenty-five books on Europe, Russia, and the Middle East. He has had articles published in The New York Times, The Washington Post, and countless other newspapers worldwide. His books include The Last Days of Europe and After the Fall . Christopher Wall is a cyber-security analyst focusing on emerging technologies, artificial intelligence, and data analytics to improve intelligence collection. He is an instructor for the Navy, teaching courses on counterterrorism and counterinsurgency. Christopher is the co-author, with Walter Laqueur, of The Future of Terrorism .