This study explores the way in which European governance seeks to address transboundary crises. Transboundary crises pose a particular challenge for administrative systems as costs and benefits are unevenly distributed, organisational and jurisdictional competencies over- and underlap, and as problem definitions and solutions are usually disputed. Boundaries are essential for the identity of national states, they are critical for determining the jurisdictional competence of organisations and they are critical for administering individual phenomena. Transboundary crises, in contrast, do not respect such boundaries. Crises themselves might be disruptive, but might be contained within certain boundaries. In the context of transboundary crises,...