Since the Maastricht Treaty in 1992 the European Union has been an increasingly important actor in the field of security and defence. However, the defence industries sector has largely been kept away from Brussels. This has usually been justified by the role that national defence industries have traditionally played as fundamental pillars for the survival of the European nation-states, thus making them reluctant to share this “sovereign tool” with the European Union. Nonetheless, recent steps in both the economic (large number of mergers and acquisitions within the European defence industry sector) and the political (security and defence integration measures within the European Union) arenas have contributed to changes in the political disc...