Contents: Foreword, Anja Jetschke; Part 1 Introduction: Roads to regionalism: concepts and cases, Lukas Goltermann, Mathis Lohaus, Alexander Spielau and Kai Striebinger. Part 2 Genesis and Growth: Ephemeral regionalism: the proliferation of (failed) regional integration initiatives in post-Soviet Eurasia, Niklas Wirminghaus; Joining the neighbors: the accessions to ASEAN in the 1990s, Niklas Aschhoff; MERCOSUR: integration through presidents and paymasters, Felix Hummel and Mathis Lohaus. Part 3 Institutional Design: Explaining the differences in the institutional design of ASEAN and NAFTA, Leon Kanthak; Why did NAFTA and ASEAN set up dispute settlement procedures?, Annika Korte; Institutional similarities between regional organizations: an analysis of ECOWAS and the Arab League, Constanze Koitzsch. Part 4 Member States' Behavior: Does regime type matter? Regional integration from the nation states' perspectives in ECOWAS, Veronika Kirschner and Soren Stapel; State capacity and compliance in ASEAN, Lukas Goltermann; When pigs fly: ECOWAS and the protection of constitutional order in events of coups d'etat, Kai Striebinger. Part 5 Effects on Member States: MERCOSUR's contribution to democratic consolidation, Christian Pirzer; ASEAN and civil society: an incompatible relationship?, Corinna Krome; Monetary integration through the backdoor: does NAFTA promote monetary policy harmonization in North America?, Alexander Spielau. Part 6 Conclusion: Do all roads lead to regionalism?, Tanja A. Borzel; Index.