Bosnia and Herzegovina offers a useful lens through which to view international state-building and democratization efforts. International engagement here incorporated significant civilian and military investment and has been ongoing for many years. In each chapter international scholars and field-based practitioners examine the link between post-war events and a structure that effectively embeds ethno-national politics and tensions into the fabric of the country. These contributors offer lessons to be learned, and practices to be avoided whilst considering whether, as state-building and democratization efforts have struggled in this relatively advanced European country, they can succeed in other fragile states.