This paper recalls the state of ballistic missile proliferation at the time of the adoption of the Code, before delving into the genesis of the Code and especially the various reports and meetings that promoted the adoption of a supply-side multilateral instrument. It describes the conferences and diplomatic efforts that led to the Code in 2002. It also explains why the Code ended up the way it is today with modest ambitions but concrete outcomes.

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.