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Introduction PART I: CUSTOMARY INTERNATIONAL LAW 2. A Theory of Customary International Law 3. Case Studies PART II: TREATIES 4. A Theory of International Agreements 5. Human Rights 6. International Trade PART III: RHETORIC, MORALITY, AND INTERNATIONAL LAW 7. A Theory of International Rhetoric 8. International Law and Moral Obligation 9. Liberal Democracy and Cosmopolitan Duty 10. Conclusion
Ikenberry et al. (Sat,) studied this question.