This is a phantastic book! It demonstrates that the European Union (EU) is indeed the dominant model of institutional diffusion to regional organizations in the rest of the world. However, diffusion does not lead to institutional convergence, but regional organizations across the world exhibit distinct features. National governments are no dummies simply downloading "EU software". They craft and filter EU features through their own preferences and strategies leading
to the selective adaption of institutional models. Lenz develops his argument through a carefully designed mix of quantitative analyses complemented by detailed case studies. This book will have a lasting impact on both comparative regionalism and diffusion studies in general.
Tobias Lenz is Professor of International Relations, Leuphana University Lüneburg, and leader of a Leibniz Junior Research Group on the legitimation strategies of regional organizations at the German Institute for Global and Area Studies (GIGA). His research focuses on the design and evolution of international organizations, their legitimacy and legitimation, and on the role of the European Union in global regionalism. Previous and forthcoming publications
include A Theory of International Organization (with Liesbet Hooghe and Gary Marks, OUP, 2019) and The Rise of International Parliaments: Strategic Legitimation in International Organizations (with Frank Schimmelfennig, Thomas Winzen, Jofre Rocabert, Loriana Crasnic, Cristina Gherasimov, Jana Lipps, and Densua
Mumford, OUP, 2020).