Part I. Global Solidarity and Common but Differentiated Responsibilities.- Chapter 1. Global Solidarity and Common but Differentiated Responsibilities.- Chapter 2. Responsibility, Solidarity and their Connections in International Law: Towards a Coherent Framework.- Chapter 3. Bellying up to the Bar - Differentiating in the Distribution of Responsibilities: A Philosophical Analysis.- Chapter 4. Solidarity and Differentiation: Moral and Legal Obligations of States in Addressing Global Challenges - The Case of Climate Change.- Chapter 5. Global Solidarity, Differentiated Responsibilities and the Law of the Sea.- Chapter 6. Differentiated Rights and Responsibilities in Activities in the Area - From Wealth Redistribution to Marine Environmental Protection.- Chapter 7. Are Trade Measures to Tackle the Climate Crisis the End of Differentiated Responsibilities? The Case of the EU Carbon Border Adjustment Mechanism (CBAM).- Chapter 8. Embedding 'Solidarity' in International Water Law: Framing 'Equity' in Transboundary Water Governance.- Chapter 9. Common but Differentiated Responsibilities and Respective Capabilities as a Guiding Principle in International Health Law in Times of Pandemics.- Chapter 10. The Flexibility Device in the International Covenant on Economic, Social and Cultural Rights.- Chapter 11. Solidarity as Normative Rationale for Differential Treatment: Common but Differentiated Responsibilities from International Environmental to EU Asylum Law?.- Chapter 12. Reconciling the Irreconcilable: Some Thoughts on Belligerent Equality in Non-International Armed Conflicts.- Part II. Dutch Practice.- Chapter 13. In Sickness and in Health: The Right to Self-determination within the Kingdom of the Netherlands and the Impact of the Coronavirus Crisis.- Chapter 14. Cooperation and Coordination in Ocean Governance: An Overview of the BBN Process and the Involvement of The Netherlands.- Chapter 15. Victims of Hawija v. The Netherlands: Proportionality and Precaution under Mounting Pressure.- Table of Cases.- Index.