This collection examines new developments in economic and security co-operation in the Asia-Pacific in relation to two recent 'shock' events that have significantly impacted upon the region, these being the 1997/98 East Asian financial crisis and the September 11 attacks on the United States. These are examined through three 'prime dimensions' of analysis, namely: the tension between the 'post-shock' forces of 'imperative co-operation' and the counter-forces of Asia-Pacific 'complex diversity'; the growing conflation between economic and security issues - or the 'economics-security nexus' - in Asia-Pacific international relations; the relationship between the Asia-Pacific's new economic and security bilateralism and regional-level forms of co-operation, integration and governance.