The European Union (EU) is making strong inroads into areas of security traditionally reserved to states, especially into internal security, or Justice and Home Affairs. The Area of Freedom, Security and Justice (AFSJ), as it has been renamed in the Amsterdam Treaty, has seen significant policy developments since the late 1990s. In fact, there has been no other example of a policy-making area making its way so quickly and comprehensively to the centre of the treaties and to the top of the EU's policy-making agenda. After major treaty revisions in Maastricht, Amsterdam, Nice, and, finally the...