In November 2007 Adam Moore was conducting fieldwork in Mostar when the southern Bosnian city was rocked by two days of violent clashes between Croat and Bosniak youth. It was not the city's only experience of ethnic conflict in recent years. Indeed, Mostar s problems are often cited as emblematic of the failure of international efforts to overcome deep divisions that continue to stymie the postwar peace process in Bosnia. Yet not all of Bosnia has been plagued by such troubles. Mostar remains mired in distrust and division, but the Brcko District in the northeast corner of the country has...