This book is about Southeast Asia in a new era. This new era began with a new century and a new millennium posing great challenges to the region and to each country in it. It has a chapter on each of the ten countries in the region, covering both the politics and the economic aspects. It has one on the region as a whole, and one on the Association of Southeast Asian Nations. It has a thoughtful afterword that is a summary of its contents but is more than the sum of the individual chapters. Many books and chapters of books have been written on Southeast Asia, usually by external observers. Aside from being up-to-date, this book is different from most of them in several ways. Most of the chapters are written by Southeast Asians; indeed, most of the country-chapters are written by natives of those countries. This means that the perspectives are based on local insights, which provide nuance and sensitivity. The book is addressed primarily to the young people of Southeast Asia, so that they can get to know their neighbours better. Each chapter has a guide to further reading and a series of questions to provoke further research and deeper inquiry.