The Hungarian Yearbook of International Law and European Law comprises a collection of articles written mainly by Hungarian authors, covering developments in the field of international law and EU law, and progress in the domestic implementation and application of these fields of law. The thematic chapter of Vol. 10 (2022), entitled ‘Gabčíkovo-Nagymaros Project Case Judgment: 25 Years On’, focuses on one of the most important environment-related cases of the ICJ, and its impact on the development of international (environmental) law. The Anniversary section is dedicated to the 100th anniversary of the establishment of diplomatic relations between the United States and Hungary. The Yearbook also contains numerous articles on new developments in European law and international law, Hungarian state practice, case notes and book reviews. The Yearbook offers a comprehensive picture of the state of application and implementation of international law and EU law in Hungary.