This article summarizes the discourse around the investigation and prosecution of the international crimes committed by Russian officials and the Russian military in the war of aggression against Ukraine. It digests the efforts of states and international institutions to achieve accountability for the crime of aggression, war crimes, crimes against humanity, and genocide allegedly committed in Ukraine. It highlights the investigation into the situation in Ukraine by the International Criminal Court and analyzes the ongoing debate over the establishment of a special international criminal tribunal for the crime of aggression against Ukraine.