Concerns about the ero­sion of the ‘taboo’ on chemical weapons use have deepened in recent years, in particular following the chemical weapons attacks that have taken place in the Syrian conflict. The sanctions regime against the proliferation and use of chemical weapons which the EU adopted in October 2018 constitutes the Union’s first coercive instrument against chemical weapons, and is an attempt by the EU to support the multilateral chemical disarmament regime after efforts to frame a response via the United Nations Security Council failed.

Despite the direction offered by the EU Global Strategy, there is as yet no common approach to how member state governments understand threats to the EU’s security. Under the new Strategic Compass initiative – designed to provide enhanced politico-strategic direction for EU security and defence – member state governments and institutions will conduct their own threat analysis as a first step in a 2-year process. This Brief examines how a clearer understanding of such threats can help the EU to achieve its level of ambition in this area.