Lars-Erik Cederman is Professor of International Conflict Research at the Center for Comparative and International Studies, ETH Zurich. He can be reached at lcederman@ethz.ch.

David E. Cunningham is Assistant Professor of Government and Politics at the University of Maryland, College Park, and Research Associate at the Centre for the Study of Civil War, Peace Research Institute Oslo. He can be reached at dcunningham@gvpt.umd.edu.

Christopher J. Fariss is a Ph.D. candidate at the Department of Political Science, University of California, San Diego. He can be reached at cjf0006@gmail.com.

Emilie M. Hafner-Burton is Associate Professor of International Relations and Pacific Studies and Director of the Laboratory on International Law and Regulation at the University of California, San Diego. She can be reached at ehafner@ucsd.edu.

Laurence R. Helfer is Harry R. Chadwick, Sr. Professor of Law and Co-Director of the Center for International and Comparative Law at the Duke University School of Law, Durham, N.C. He can be reached at helfer@law.duke.edu.

Sarah C. Kaczmarek is an analyst at the U.S. Government Accountability Office, Washington, D.C. She can be reached at sck29@georgetown.edu.

Ikuo Kume is Professor of Political Science and Economics at Waseda University, Tokyo. He can be reached at kume@waseda.jp.

Megumi Naoi is Assistant Professor of Political Science at the University of California, San Diego. She can be reached at megumi.naoi@gmail.com.

Abraham L. Newman is Associate Professor at the Edmund A. Walsh School of Foreign Service at Georgetown University, Washington, D.C. He can be reached at aln24@georgetown.edu.

Krzysztof J. Pelc is Assistant Professor of Political Science at McGill University, Montreal. He can be reached at kj.pelc@mcgill.ca.

Idean Salehyan is Associate Professor of Political Science at the University of North Texas, Denton, and Research Associate at the Centre for the Study of Civil War, Peace Research Institute Oslo. He can be reached at idean@unt.edu.

Kristian Skrede Gleditsch is Professor of Government at the University of Essex, Colchester, England, and Research Associate at the Centre for the Study of Civil War, Peace Research Institute Oslo. He can be reached at ksg@essex.ac.uk.

Didier Sornette is Professor of Entrepreneurial Risks, ETH Zurich. He can be reached at dsornette@ethz.ch.

T. Camber Warren is a postdoctoral fellow at the Center for Comparative and International Studies, ETH Zurich. He can be reached at CamberW@gmail.com.