" Simon Butt is one of the foremost experts and respected scholars on Indonesian law, particularly constitutional law. This timely and eminently readable book offers the most comprehensive account of the Indonesian Constitutional Court to date. It offers a detailed and insightful examination of the Indonesian Constitutional Court, tracing its development, key decisions and evolving dynamics. Simon Butt 's critical perspective provides a sharp analysis of the court's rulings, reasoning and challenges. This work stands as a significant contribution to the study of judicial institutions and modern constitutionalism, making it a valuable resource for scholars, judges, and legal practitioners." Saldi Isra , Professor of Law, Universitas Andalas, and Deputy Chief Justice of the Indonesian Constitutional Court (2023 - 2028).