Ian S. Lustick is a non-resident fellow at the Quincy Institute and the Bess W. Heyman Professor (Emeritus) in the political science department of the University of Pennsylvania. He earned his B.A. from Brandeis University and his M.A. and Ph.D. in political science from the University of California, Berkeley. He is the author or editor of 20 books and dozens of scholarly articles on Israel, Arab–Israeli relations, U.S. foreign policy, social science methodology, and computational modeling. Before coming to the University of Pennsylvania, he taught at Dartmouth College. He worked for one year as a Middle East analyst in the State Department’s Bureau of Intelligence and Research and has served as a consultant for multiple U.S. administrations on national security, the Middle East, and intelligence matters. His most recent book, translated into both Hebrew and Arabic, is Paradigm Lost: From Two-State Solution to One-State Reality (2019).