Membership of the European Union (EU) has entailed a shift in the neutral policies of Austria, Finland and Sweden. This chapter explores the accession negotiations and the breakdown of neutrality in the context of the Common Foreign and Security Policy (CFSP). The 'reworking' of neutrality is mostly regarded as a product of the end of the Cold War, and scant focus is given to the EU's role in this change in policy. The EU's conceptualisation of neutrality had the effect of 'problematising' what had hitherto been the key tenet of the security policies of these countries. This, in many ways, marginalises the contribution that neutrality can afford to a post-Cold War security environment.