Does the Asia Pacific region need a new regional security architecture, and if so, what form should it take? The question of resolving or at least managing the regional security environment has become more important as calls for new security arrangements are being made in response to the changing dynamics which affects the region's stability. Various security challenges brought about by the rise of China and India, the growing recognition of the impact by transnational and non-traditional security concerns along with traditional security concerns such as the potential conflict in the South China Sea and the instability of the Korean Peninsula have heightened the awareness of policymakers, scholars and analysts to the region's shortcomings in terms of institutional arrangements designed to resolve potential crisis. The ASEAN Regional Forum's redirection to focusing on non-traditional security concerns and wariness towards moving to preventive diplomacy has made supporters and critics alike to think of regional security architecture that can address the ARF's shortcomings. This paper analyzes the debate and provides a summary of the choices confronting policymakers. The paper suggests that the evolving regional security architecture's development will be gradual and based on existing institutions, balancing the concerns of powerful states with less powerful ones and moving towards a community rather than remaining on the current cooperative security framework.

We cannot expect in East Asia over the foreseeable future to see the sort of conflation of sovereign states that has occurred in Europe. We must anticipate that, for the foreseeable future, the requirement will be for the sensible management and containment of competitive instincts. The establishment of a multilateral security body in East Asia that includes all the key players, and which the major powers invest with the authority to tackle the shaping of the regional security order, remains a critical piece of unfinished business.

The topic of this book deals with a highly relevant empirical issue: East asian security and the dynamics of the respective governance structure or architecture are not only of regional but of global concern. Since the pivot of the American pivot to East Asia and other external actor ́s responses to it the security architecture has changed in form, size and function. In order to analyze and explain these changes, hypotheses derived from IR middle range theories (i.e. soft and hard balancing) will be applied to cases of bilateral and multilateral security governance in East Asia.

Can regional and interregional mechanisms better institutionalize the - creasing complexity of economic and security ties among states in Nor- east, Southeast, and South Asia? As the international state system und- goes dramatic changes in both security and trade relations in the wake of the Cold War’s end, the Asian financial crisis, and the attacks of Sept- ber 11, 2001, this question is now of critical importance to both academics and policymakers. Still, little research has been done to integrate the ana- sis of both regional security and economic dynamics within a broader c- text that will give us theoretically informed policy insights. Indeed, when we began our background research on the origin and e- lution of Asia’s institutional architecture in trade and security, we found that many scholars had focused on individual subregions, whether Nor- east, Southeast or South Asia. In some cases, scholars examined links - tween Northeast and Southeast Asia, and the literature often refers to these two subregions collectively as “Asia”, artificially bracketing South Asia. Of course, we are aware that as products of culture, economics, history, and politics, the boundaries of geographic regions change over time. Yet the rapid rise of India and its increasing links to East Asia (especially those formed in the early 1990s) suggest that it would be fruitful to examine both developments within each subregion as well as links across subregions.

During the Cold War, the U.S. built a series of alliances with Asian nations to erect a bulwark against the spread of communism and provide security to the region. Despite pressure to end bilateral alliances in the post-Cold War world, they persist to this day, even as new multilateral institutions have sprung up around them. The resulting architecture may aggravate rivalries as the U.S., China, and others compete for influence. However, Andrew Yeo demonstrates how Asia's complex array of bilateral and multilateral agreements may ultimately bring greater stability and order to a region fraught with underlying tensions. Asia's Regional Architecture transcends traditional international relations models. It investigates change and continuity in Asia through the lens of historical institutionalism. Refuting claims regarding the demise of the liberal international order, Yeo reveals how overlapping institutions can promote regional governance and reduce uncertainty in a global context. In addition to considering established institutions such as the Association of Southeast Asian Nations and the Asia-Pacific Economic Cooperation, he discusses newer regional arrangements including the East Asia Summit, Trans-Pacific Partnership, and the Belt and Road Initiative. This book has important implications for how policymakers think about institutional design and regionalism in Asia and beyond.

This book offers the most comprehensive analysis yet of the ASEAN Regional Forum (ARF), which remains the foremost dialogue forum for the promotion of cooperative security in the Asia-Pacific. Contributors focus on the perspectives and roles of the key players in the ARF – ASEAN, the United States, China, Japan, and Australia – and discuss to what extent these participants have shaped the Forum's institutional development and affected its achievements and prospects against the backdrop of the evolving regional security architecture. They also examine in depth how participants have used the Forum to respond to a range of important transnational security issues and challenges, including terrorism and maritime security, as well as disaster relief. This work also explores how, despite the difficulties in reaching a new consensus regarding the collective pursuit of preventive diplomacy, some activist participants have succeeded in bringing about a notable, albeit incipient, 'practical turn' in the ARF’s security cooperation. This book will appeal to students of South-East Asian Politics, Asian Security Studies and International Relations in general.

The security architecture of the Asia/Pacific region is in a profound transformation. Such changes are not without problems, which are discussed here.