Graham Tillett Allison, Jr. (born 23 March 1940) is an American political scientist and professor at the John F. Kennedy School of Government at Harvard. He is renowned for his contribution in the late 1960s and early 1970s to the bureaucratic analysis of decision making, especially during times of crisis. His book Remaking Foreign Policy: The Organizational Connection, co-written with Peter Szanton, was published in 1976 and had some influence on the foreign policy of the administration of President Jimmy Carter which took office in early 1977. Since the 1970s, Allison has also been a leading analyst of U.S. national security and defense policy, with a special interest in nuclear weapons and terrorism.