In this new edition of this book, Amitav Acharya updates developments in Southeast Asia through the first decade of the new century: the aftermath of the financial crisis of 1997, security affairs after September 2001, the long-term impact of the 2004 tsunami, and the substantial changes wrought by the rise of China as a regional and global actor. Acharya argues in this book for the crucial importance of regionalism in a different part of the world.