David B. Carter is Assistant Professor of Political Science at Pennsylvania State University, University Park. He can be reached at dbc10@psu.edu.

Orfeo Fioretos is Assistant Professor of Political Science at Temple University, Philadelphia. He can be reached at kof@temple.edu.

H. E. Goemans is Associate Professor of Political Science at University of Rochester. He can be reached at hgoemans@mail.rochester.edu.

Thomas Oatley is Associate Professor of Political Science, University of North Carolina at Chapel Hill. He can be reached at oatley@unc.edu.

Brian C. Rathbun is Assistant Professor in the School of International Relations, University of Southern California, Los Angeles. He can be reached at brathbun@usc.edu.

Christian Reus-Smit is Professor of International Relations at the European University Institute, Florence, Italy. He can be reached at Christian.Reus-Smit@EUI.eu.

Dustin H. Tingley is Assistant Professor of Government at Harvard University, Boston. He can be reached at dtingley@gov.harvard.edu.

Barbara F. Walter is Professor of Political Science at the Graduate School of International Relations and Pacific Studies, University of California, San Diego. She can be reached at bfwalter@ucsd.edu.