'This collection of essays, dedicated to the memory of Prof. Merrills – the late grand master of international dispute settlement – is an impressive new contribution to the literature in this dynamic field of international law. It brings together some of the biggest and most promising scholars and practitioners active in this area of international law to take stock of progress and remaining challenges, and to address systemic questions of fragmentation, coordination, legitimacy and effectiveness in international dispute settlement. The high calibre of the scholarship offered, the breadth of the book's scope of coverage and the well thought-out analytical framework used make this an essential piece of reading for students, researchers, practitioners and other aficionados of international dispute settlement and international law.' Yuval Shany, Hersch Lauterpacht Chair in International Law and former Dean of the Law Faculty of the Hebrew University of Jerusalem