Increased international interdependence - globalization - has also greatly increased the potential for international conflict in various areas such as trade, competition, the environment, and human rights. Observers have counted up to 40 international courts that serve to settle such conflicts. What are adequate criteria to measure the effectiveness of international courts? What factors explain the differences in their success? What factors explain the differences of nation-state governments in delegating competence to international courts in the first place? Should there be any additional courts? This volume assembles ten papers and comments that contain first steps in answering these questions. Their authors are legal scholars and economists, but also political scientists and philosophers. With this volume the "Jahrbuch für Neue Politische Ökonomie" has changed its title to "Conferences on New Political Economy".