Building a neighborly community, available for the first time in paperback, explores the political economy of post-cold war East Asian co-operation by examining the history of intra-regional co-operation, against the background of China’s rise and Japan’s relative decline, both real and perceived. The book in particular examines how East Asian states have dealt with the South China Sea as a region-wide security challenge and the imperative for self-help after the 1997 economic crisis. The book builds on the explanatory strength of analytical eclecticism, and ultimately concludes that China, South Korea, Japan, and ASEAN states have aimed for constructing a neighborly community. The fundamental differences between a neighborly community and the kind of community that has emerged in Europe and North America are that qualification for membership is not conditional, the process of routine interactions is itself one of reassurance, the aim of inter-state interactions is to foster acceptance of each other, and changes in a member’s foreign policy behaviour are accepted.