This edited collection evaluates international and regional solutions to issues in global governance that have emerged over the course of the twentieth century. Two alternative normative and decisional approaches to the 'international' problems of today's globalised world are explored: the international and the supranational solution.

Introduction: (inter)national governance ¿ theory and practice Robert Schütze; Part I. International Perspectives: A. Formal Foundations: 1. The 'unsettled' eighteenth-century: Kant and his predecessors Robert Schütze; 2. World order through law: the politics of Kelsenian positivism in international law Jochen von Bernstorff; 3. Tyranny and constitutionalism beyond the state Aoife O'Donoghue; 4. New order for yet another new world: philosophy in a time of global existential crisis Philip Allott; B. Substantive Challenges: 5. The real utopia: international constitutionalism and the use of force Marc Weller; 6. Variable geometry in the WTO Bernard M. Hoekman and Petros C. Mavroidis; 7. New challenges for global environmental governance Markus W. Gerhring; 8. Tackling mass atrocity in a globalised world: the International Criminal Court Olympia Bekou; Part II. European Perspectives: A. Formal Foundations: 9. European international law Bruno de Witte; 10. Constitutional state of the European Union Christoph Möllers; 11. Subsidiarity as a principle of EU governance Katarzyna Granat; 12. Citizenship's role in the European Federation Dimitry Kochenov; B. Substantive Solutions: 13. Integration and constitutionalisation in EU foreign and security policy Ramses A. Wessel; 14. Intergovernmentalism in the wake of the Euro area crisis Alicia Hinarejos; 15. EU law and global environmental challenges Ludwig Krämer; 16. The normative foundations of European criminal law Valsamis Mitsilegas; Conclusion: after globalisation: engaging the 'backlash' Marti Koskenniemi; Epilogue: elements of a theory of global governance David Held.