The 2008 financial crisis and its aftermath have triggered uncertainty about the future of the dollar as the world's reserve currency. China and other countries in the Asia-Pacific region have voiced support for a new global monetary regime. There are both economic and geopolitical motivations at the root of these challenges. Going forward, what will the future hold for the international monetary system? Crudely put, will currency follow the flag? This article addresses this question by considering the economic opportunity and geopolitical willingness of actors in the Pacific Rim to shift away from the current international monetary system - with a special emphasis on China as the most powerful actor in the region. While the dollar has shifted from being a top currency to a negotiated one, neither the opportunity nor the willingness to shift away from the dollar is particularly strong. The current window of opportunity for actors in the region to coordinate a shift in the monetary system is small and constrained. The geopolitical willingness to subordinate monetary politics to security concerns is muted. © The author [2010]. Published by Oxford University Press in association with the Japan Association of International Relations; all rights reserved.