“…It has been described variously as a 'complex' , an 'ecosystem' , and/or a 'patchwork' of institutional arrangements (Cha, 2011;Haggard, 2013;Pempel, 2010). Endowed with neither grand architectural nor strategic coherence (Tow and Taylor, 2010), the regional 'house' that Japan and other regional stakeholders have built, most of which is centered upon ASEAN, is far from the finished article (Tan, 2009). That said, the bits and pieces of its still evolving architecture -one analyst has identified at least five distinct institutional complexes within the Asian region, each with its own ensemble of arrangements (Haggard, 2013) -have been added in an ad hoc and pragmatic fashion in response to specific historical challenges and crises, and as such have their own contingent rationale.…”