The Hague Code of Conduct aims at curbing the proliferation of missiles capable of carrying weapons of mass destruction. Today, with an important increase in ranges, these weapons are more and more used for a conventional mission, by a variety of states. This dissemination illustrates the fact that many stakeholders master the technologies necessary to build and sustain these weapons. But it also raises questions on the possible destabilising effects of these arsenals, even when they are not linked to WMDs.

Missile defence has become increasingly attractive in recent years, following the demonstration of its efficacity in the Israeli-Iranian conflict, and has epitomised by the ambitious Golden Dome programme. However, its relationship with missile proliferation is ambiguous. Arms control, non-proliferation and confidence building measures can to some extent address some of the most destabilizing features of this offense-defence competition.