The word “genocide” feels like it has always been part of our vocabulary. But do we really understand what we mean when we use it? In everyday conversation, the term is often used to describe mass killings, widespread suffering, and horrific atrocities, especially in the context of armed conflict. Yet in law, genocide has a highly specific and demanding definition, shaped by a distinct legal and historical origin.

In this 11th episode of our series, Marko Milanović, Professor of Public International Law at the University of Reading helps us unpack this complex concept. Together, we explore what genocide means in international law, how courts interpret it, what it takes to prove it, and why it matters—both in courtrooms and beyond.