Gene Park is Associate Professor of Political Science at Loyola Marymount University. He is the author of Spending without Taxation. Saori N. Katada is Associate Professor in the School of International Relations at the University of Southern California. She is the author of Banking on Stability. Giacomo Chiozza is an expert in world politics and statistical modeling, and co-author, most recently, of Leaders and International Conflict. He is Associate Professor in the Department of International Studies at the American University of Sharjah. Yoshiko Kojo is Professor in the Department of Advanced Social and International Relations at the University of Tokyo. She is a contributor to Japan in International Politics.