William Perry/Definition

Senior fellow at the Hoover Institution, is the Michael and Barbara Berberian Professor at Stanford University, with a joint appointment in the School of Engineering and the Institute for International Studies, where he is codirector of the Preventive Defense Project, a research collaboration of Stanford and Harvard Universities; U.S. Secretary of Defense 1994-1997; deputy secretary of defense (1993–94); undersecretary of defense for research and engineering (1977–81).