Since the end of the cold war, the arms industry has been experiencing a deep structural transformation. The logical consequence of such short-term and structural evolutions is that companies in the arms industry are looking to access markets beyond national borders. Such transformation becomes a policy concern, since the core regulatory framework has been built on a national basis and there are very limited structural and regulatory means for dealing with an international, or even a transnational, industry in such a sensitive activity as weapons development and production. This chapter wonders whether it is possible to qualify such transformation of the arms industry as an internationalisation process and whether it can be compared to the globalisation of commercial activities. It compares what has happened and continues to happen in the arms industry with the globalisation experienced by commercial industries.