North Korea poses difficult challenges for the United States. The full extent of theNorth Korean nuclear arsenal is unknown; tens of thousands of U.S. forces are deployedon the Korean peninsula in support of U.S. commitments to South Korea; and the peninsula sits in a strategically vital region, where the United States, China, Russia, Japan, and South Korea all have important interests at stake. And the Kim Jong-Ilgovernment is perhaps the world's most difficult to read or even see. Preparing for Sudden Change in North Koreafocuses on how to manage one of the most central unknowns: the prospect of change in North Korea's leadership. Paul B. Stares and Joel S. Wit outline three scenarios of succession —managed, contested, and failed —and offer policy recommendations for dealing with potentially fractious leadership change.Stares and Wit consider the challenges that these scenarios would pose to domestic institutions and regional security, the proliferation of nuclear arms, jumpstarting the economy, and providing humanitarian assistance.