Marion Messmer


Marion Messmer was the Co-Director of BASIC from 2019 to 2022, alongside Sebastian Brixey-Williams. Her expertise includes a breadth of issues in transatlantic security and conflict transformation, including strategic risk reduction, disarmament diplomacy and NATO-Russia relations. Marion led on BASIC’s Risk Reduction Programme, Stepping Stones to Disarmament, the Gender and Nuclear Weapons Programme and the organisation’s overall communications strategy.

Marion has been an invited speaker at a range of international conferences, including the 2019 Preparatory Committee, the EU CONOP, the Geneva Nuclear Disarmament Colloquium, the Heidelberg Center for American Studies and the Central Eurasian Studies Society Annual Conference. She regularly comments in national and international media on international security issues.

Marion has completed a PhD in the School of Security Studies at King’s College London where her research focuses on trust building and cooperation in the relationship between Russia and NATO after the end of the Cold War. Marion also holds an MPhil degree in International Relations from the University of Cambridge and a BA degree from Mount Holyoke College. Before joining BASIC, Marion worked in a range of policy roles in NGOs and local government.


  • Multilateral arms control and disarmament
  • NATO-Russia relations
  • European Security
  • Role of trust and trust building in cooperation
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