1. Introduction: the future of international legal positivism Jean d'Aspremont and Jörg Kammerhofer; Part I. Theorising International Legal Positivism: 2. Classical positivism in international law revisited Richard Collins; 3. German intellectual historical origins of international legal positivism Jochen von Bernstorff; 4. Hans Kelsen in today's international legal scholarship Jörg Kammerhofer; 5. Herbert Hart in today's international legal scholarship Jean d'Aspremont; 6. Beyond Kelsen and Hart Alexander Somek; 7. Post-modern perspectives on orthodox positivism Ingo Venzke; Part II. Relating International Legal Positivism: 8. International legal positivism and modern natural law Patrick Capps; 9. International legal positivism and legal realism Jeremy Telman; 10. International legal positivism and constitutionalism Jan Klabbers; 11. International legal positivism and new approaches to international law Sahib Singh; Part III. Using International Legal Positivism: 12. Interpretation Gleider Hernández; 13. Teaching general public international law Florian Hoffmann; 14. International law in domestic and supranational settings Beatrice Bonafé; 15. Transnational governance regimes Dennis Patterson; 16. Human rights from a neo-voluntarist perspective Théodore Christakis; 17. International criminal law Dov Jacobs; 18. International humanitarian law Yael Ronen; 19. Use of force Christian Tams and Antonios Tzanakopoulos.