edited by Matthias Kötter, Research Fellow, WZB Berlin Social Science Center, Germany; Tilmann J. Röder, Managing Director, Max Planck Foundation for International Peace and the Rule of Law, Germany, Gunnar Folke Schuppert Professor Emeritus, WZB Berlin Social Science Center, Germany; Rüdiger Wolfrum, Managing Director, Max Planck Foundation for International Peace and the Rule of Law, Germany