The year 2012 may be determinative in transforming the leadership that will decide the fate of the hexagonal maneuvering over the North Korean nuclear threat and the prospects for reunification. Leadership has great bearing on the way the states active in Northeast Asia address sensitive questions related to the Korean peninsula. How should the shared goal of denuclearization be prioritized relative to goals such as stability and the regional balance of power? What weight should be given to human rights in the context of urgent security concerns? To what extent should the multilateral nature of diplomacy override the expression of national policy priorities? How closely is coordination with South Korea advisable, recognizing its legitimacy to represent the Korean people, given divergence in threat perceptions and strategic thinking about the future of the peninsula? The essays in this volume seek to address these and other questions.