Bruce Bueno de Mesquita is Professor of Politics at New York University and a Senior Fellow at the Hoover Institution. He is the author of many books, including The War Trap. Alastair Smith is Associate Professor in the Department of Politics at New York University, Randolph M. Siverson is Professor of Political Science at the University of California, Davis, James D, Morrow is Professor of Political Science and Senior Research Scientist at the University of Michigan, He is the author of Game Theory for Political Scientists.