R institutionalism and, more so, clas-sical intergovernmentalism are more circumspect about the EU’s future. Viewed from these perspectives, European integration is a more contingent phenomenon, resting on the scope of member states’ common interests, which has arguably narrowed following successive waves of enlargement, and/or on the extent of hegemonic leadership or con-vergence of interests among the EU’s three big powers. The latter has diminished in as far as the UK has proved hostile to closer integration on most issues, leaving the EU’s fate in these perspectives increasingly in the hands of the Franco-German duo