How can international crimes committed in Ukraine be effectively investigated and prosecuted while the war continues? This event at SPUI25 explores Ukraine’s domestic efforts to ensure accountability, with particular attention to the challenges faced by investigators, prosecutors and judges, the fairness of proceedings and capacity building for legal professionals during wartime. The panel will also discuss international accountability mechanisms, including the Special Tribunal for the Crime of Aggression, investigations by the International Criminal Court, proceedings before the International Court of Justice and the role of universal jurisdiction. Speakers include Andrii Kostin, Gabrielė Chlevickaitė, Mykola Mazur and Marieke de Hoon, with Christophe Paulussen as moderator.