David A. Hamburg-doctor, teacher, hostage negotiator, presidential advisor, and more-has seen a lot in his 77 years and has a message for the 21st century: An ounce of prevention is worth many pounds of cure when it comes to deadly international conflict. To explore how the model of preventive medicine may be practically applied to political violence, Hamburg created the Carnegie Commission on Preventing Deadly Conflict. This book is the capstone of the Commission's extensive efforts and covers situations as widely ranging as World War II's Holocaust, terrorist attacks in the U. S., and the War in Iraq.