Provides an analysis of the most crucial of European Union institutions, making a contribution to the debate on power and legitimacy in the European Union. Despite the difficulties in investigating an institution which prefers to conduct its business behind closed doors, Philippa Sherrington was able to attend sessions of the Council of Ministers and conduct detailed interviews with key European officials of the main institutions, and with national ministers. She is in a position to examine the internal operation of the Council, its relationship with other European Union institutions and the external factors affecting its decision-making role. She also offers a new methodological approach. Arguing that previous studies have been deficient in her analysis of the council's internal operation due to their reliance on existing methods of analyzing EU insitutional power, her approach draws on both policy analysis and negotiation theory. The book provides a detailed account of the way in which business is really conducted in this still most secret of institutions, demonstrating that the Council of Ministers remains the ultimate decision-maker in the European Union.