The proposed research aims to clarify the ways in which the logics of security and economics relate to each other in the formations of regional order in Western Europe and East Asia. The main thesis is likely to claim that a prior arrangement of international security both enables and con.fines the development of a stable, economically interdependent area, and determines, if roughly, the territory of such an area. In this comparative exercise, I would like to test the thesis, by cross-examining the recent cases in which both Western Europe and the Asia-Pacific region reinforced the intra-regional linkages.