This book owes much insight, stimulus and encouragement to many, in all the years of research, teaching and advisory practice in international economic law. Colleagues and students alike on both sides of the Atlantic broadened and deepened the author’s sensitivity for the interplay between international economic law in the traditional sense and other legal regimes, especially human rights and environmental law as well as for the balance between universal or regional standards and proper deference to local or national values in all their diversity. The same holds true for a leitmotif of the book, the contribution of modern international economic law to rationality, to the rule of law and other aspects of ‘Good Governance’. My particular thanks go to present or former research assistants at my chair at the University of Bonn, in particular to Carsten Kalla, Karoline Büchler and Dr. Nicole Maldonado. I also thank Florian Kolling, Evin Dalkilic and Dr. Nils Grosche for valuable research on specific sectors or issues.