Isabelle Haßfurther is a legal advisor at the Berlin-based European Center for Constitutional and Human Rights (ECCHR). As a member of the International Crimes and Accountability program, she focuses on accountability for international crimes committed in the context of the war of aggression against Ukraine. She supports survivors through strategic legal interventions in various European jurisdictions. She studied politics and law with a focus on general public international law, international criminal law, and human rights in Germany, France, and the UK. After her studies, she worked as a research and teaching associate at the Walther Schücking Institute for International Law, Kiel, where she is also pursuing her PhD. Prior to joining ECCHR, she worked as a freelance assistant for the international law firm Lindeborg Counselors at Law in London (UK) and led a study on questions of immunity from prosecution of international crimes for REDRESS as part of the Cambridge Pro Bono Project. She is admitted as a lawyer to the Hamburg Bar Association.