Vassilis Ntousas is the Stavros Niarchos Foundation Academy Fellow, hosted by the Europe Programme at Chatham House. His research focuses on the links between EU foreign policy in an era of global institutional turbulence and the defence and transformation of the multilateral system. From 2015-2019, he was the senior international relations policy advisor at the Foundation for European Progressive Studies (FEPS) in Brussels. In this role, he was responsible for leading the design and implementation of the foundation’s global research and activity programmes, covering the world’s major regions. Prior to FEPS, he worked as a communications and political advisor at the Municipality of Thessaloniki, Greece, providing advice in the areas of international affairs and intercity diplomatic relations.