The EU's Arms Control Challenge: Bridging Nuclear Divides is a Chaillot Paper by Clara Portela, published by the EU Institute for Security Studies in April 2021. The paper examines the challenges faced by the EU in implementing effective arms control measures in the face of nuclear divides. The author argues that the EU must take a more proactive and comprehensive approach to arms control in order to bridge these divides and promote stability and security in the region. The paper also highlights the importance of cooperation and dialogue between the EU and other actors, including Russia and the United States, in achieving this goal.