Comparative Regional Integration: Governance and Legal Models is a groundbreaking comparative study on regional or supranational integration through international and regional organizations. It provides the first comprehensive and empirically based analysis of governance systems by drawing on an original sample of 87 regional and international organizations. The authors explain how and why different organizations select specific governance processes and institutional choices, and outline which legal instruments - regulatory, organizational or procedural - are adopted to achieve integration. They reveal how different objectives influence institutional design and the integration model, for example a free trade area could insist on supremacy and refrain from adopting instruments for indirect rule, while a political union would rather engage with all available techniques. This ambitious work merges different backgrounds and disciplines to provide researchers and practitioners with a unique toolbox of institutional processes and legal mechanisms, and a classification of different models of regional and international integration.

Carlos Closa is a Professor at the Institute for Public Goods and Policies (IPP) and Director of the Research Area 'European, Transnational and Global Governance' in the Global Governance Programme/RSCAS at the European University Institute (EUI). Lorenzo Casini is a Tenured Associate Professor of Administrative Law in the Faculty of Law at the University of Rome 'Sapienza'. He is a Research Fellow at New York University for the Global Administrative Law Project and has written several articles and books on comparative and global administrative law. Omri Sender is Counsel at The World Bank and a consultant in public international law. He is currently pursuing a doctoral degree in international law at the George Washington University Law School, and frequently writes and publishes in the field of public international law.