Postwar Kosovo has been the subject of a highly intrusive international state-building project, including an unprecedented influx of international administrators, assistance and funds. However, it increasingly bears the hallmark of a weak and captured state. This special issue contributes theoretical and empirical insights that shed light on possible explanations, difficulties and prospects of the state-building project in Kosovo. Theoretically, we investigate how international and local explanations play out, interact and gain dominance over each other; highlight the local factors that shape the experience of state-building; and focus on the hybridity of institutionand state-building on the ground. Empirically, we take stock of two decades of international state-building activities and one decade of independent statehood by providing long-term and in-depth analysis of specific areas of reform-municipal governance, state bureaucracy, normalization of relations between Serbia and Kosovo, education, creation of armed forces, security sector reforms and reception of Salafi ideologies. Such time-sensitive, case-nuanced and empirically heavy analysis enables the authors to go back and forth between the role of international activities, domestic strategies of resistance and evidence of hybrid reforms in order to test the role of competing explanations.