Panos Merkouris is Professor of International Law at the University of Groningen, and Principal Investigator of the TRICI-Law project. He specialises in interpretation, law of treaties, sources of international law, and dispute settlement, on all of which he has written extensively.

• ContentsAbbreviations1 Introduction2 Interpretation of Customary International Law: Barred Due to ItsNature, or a Valid Method of Content-Determination?3 The Interpretability and Interpretation of Customary International Lawin International Case-Law4 The Interpretability and Interpretation of Customary International Lawin Domestic Case-Law5 Boundless or Bounded Interpretation?: the Conundrum of In/correctInterpretations6 Precautions/Limits of Interpretation7 Jus Cogens Norms as a Limit in the Interpretation of CustomaryInternational Law8 Revision as a Limit in the Interpretation of Customary InternationalLaw9 Misinterpretation: the Rules of Interpretation as a Limit in theInterpretation of Customary International Law10 ConclusionAnnex: 2023 TRICI-Law Draft Guiding Principles on the Interpretation ofRules of Customary International LawBibliography