The Law on Nuclear Weapons: An International Commentary (ed. William H. BOOTHBY and Wolff Heintschel von HEINEGG, Edward Elgar Publishing, 2025) provides a uniquely clear and comprehensive review of the law on nuclear weapons. It draws on the insight and input of a group of 15 experts from around the world and in so doing provides an authoritative text that sets out not only the positions of a number of states but a carefully articulated guide to this complex area of law.