Until the end of the 1990s, EU integration in the area of criminal law centred primarily around the regional deepening of traditional judicial cooperation in criminal matters and the development of law enforcement cooperation (including the setting up of Europol as a support agency). By the end of the 1990s respectively 2000s, the EU also gained (limited) supranational competence in the areas of substantive respectively procedural criminal law. Both judicial and law enforcement cooperation we...