sentences:  His graduate students are now professors at Princeton University, MIT, University of Pennsylvania, Brown University, the University of Wisconsin, Northwestern University, and the United States Military Academy.In addition, he was co-master of Winthrop House with his wife Mandana Sassanfar in 2003-2009.Before his career in academia, he worked for Herman Kahn at the Hudson Institute (1973 and 1974) and served in the United States government from 1981 to 1990.