“Grant's craftsmanship is undeniable. This is a well-nigh brilliant study, based on extensive and careful research, of an under-analyzed phenomenon… [T]his is classic international legal scholarship at its best.” Jan Klabbers, University of Helsinki / New York University, vol. 7 International Organizations Law Review (2010), 227–230.“… a valuable account of the practice... livening up old controversies in order better to understand new ones.” Anne-Laurence Brugère, University of Geneva, vol. 21 European Journal of International Law (2010) 791–792.