The Cluster on Conflict, Humanitarianism and Security co-hosted a seminar with the Irish Centre for Human Rights on the prosecution of Ratko Mladić on Wednesday 14 March 2018. The well-attended seminar was given by Jonas Nilsson, former Senior Legal Officer advising the Trial Chamber at the International Criminal Tribunal for the Former Yugoslavia in the Hague. In this seminar, Nilsson recounted the process leading to the conviction of Mladić for genocide, crimes against humanity and war crimes, and explained how the judgment marked the end of the work of the ICTY. One of the biggest war crimes trials in history, the trial against Ratko Mladić presented numerous challenges and lessons the relevance of which for all other present and future international courts and tribunals were discussed in depth during the seminar. Dr. Shane Darcy of the Cluster on Conflict, Humanitarianism and Security and the Irish Centre for Human Rights, chaired the event.