This book provides an instructive overview of the memberships, evolutions and achievements of regional organizations across Africa, the Americas, Asia and Europe since 1945. 

Respected political science academics analyse the roles and impacts of 76 organisations, and compare their successes and failures in meeting regional and international challenges. They consider organisations' competencies and cooperation in areas of policy including trade, finance, health, science and more, and trace patterns in their development. 

For those with interests in international relations and law, political science and regionalism, this is an essential companion to the work of some of the world's most significant organisations