No one likes nation-building. The public dismisses it. Politicians criticize it. The traditional military disdains it, and civilian agencies lack the blueprint necessary to make it work. Yet functioning states play a foundational role in international security and stability. Left unattended, ungoverned spaces can produce crises from migration to economic collapse to terrorism. Keith W. Mines has taken part in nation-building efforts as a Special Forces officer, diplomat, occupation administrator, and United Nations official. In Why Nation-Building Matters he uses cases from his own career to argue that repairing failed states is a high-yield investment in our own nation's global future. Eyewitness accounts of eight projects - in Colombia, Grenada, El Salvador, Somalia, Haiti, Darfur, Afghanistan, and Iraq - inform Mines' in-depth analysis of how foreign interventions succeed and fail. Building on that analysis, he establishes a framework for nation-building in the core areas of building security forces, economic development, and political consolidation that blend soft and hard power into an effective package. Grounded in real-world experience, Why Nation-Building Matters is an informed and essential guide to meeting one of the foremost challenges of our foreign policy present and future.