In a growing number of instances after the cold war, the United Nations and other international actors have sought to rebuild or establish new political institutions in states or territories recovering from violent conflict. From Afghanistan, Iraq, and the western Balkans to less prominent wars in Africa, Asia, the Caribbean, Central America, and the South Pacific, the international community's response involves extensive intrusions into the domestic affairs of sovereign states. Extending beyond the narrow mandates of traditional peacekeeping and humanitarian relief operations, these...