Peace Research Institute Oslo, Independent, ETH Zurich, ETH Zürich, Independent, University of Texas at Austin - Lyndon B. Johnson School of Public Affairs, Universitat Pompeu Fabra (UPF) - Faculty of Economic and Business Sciences, International Peace Research Institute, Oslo (PRIO), University of California, San Diego (UCSD) - Department of Political Science, International Peace Research Institute, Oslo (PRIO), George Mason University, Schar School of Policy and Government, University of Oslo - Department of Political Science, Independent, University of Bern - Department of Economics, Independent, Independent, Independent, Independent, International Peace Research Institute, Oslo (PRIO), University of Hamburg, Independent, Independent, Norwegian University of Science and Technology (NTNU), The Economic and Social Research Institute, Dublin, International Peace Research Institute, Oslo (PRIO) and Uppsala University - Department of Peace and Conflict Research