Before coming to Rochester, he was an Assistant Professor at Duke University, a Visiting Professor at Stanford University, and a National Security Fellow at Harvard University. He received his Ph.D. in 1995 from the University of Chicago. His current research interests include attachment and claims to territory, and their impact on international relations. His research has been published in many of the discipline’s leading journals, including the American Journal of Political Science, the American Political Science Review, and the Journal of Politics. He has also published two books. The first, War and Punishment, was published by Princeton University Press. The second, Leaders and International Conflict, was published by Cambridge University Press. More information can be found at his website.