Special Tribunal for the Crime of Aggression against Ukraine

The Special Tribunal for the Crime of Aggression against Ukraine (STCAU or STCAFrench: Tribunal spécial pour le crime d'agression contre l'Ukraine) is an ad hocinternational criminal tribunal aimed at prosecuting individuals responsible for the Russian invasion of Ukraine under the legal concept of crimes of aggression, as a complement to the existing International Criminal Court investigation in Ukraine.

An agreement between the Council of Europe and Ukraine to establish the tribunal was signed on 25 June 2025 in Strasbourg. The agreement sets out the conditions for establishing the tribunal and includes its statute in an annex. As of 26 March 2026, the tribunal had not yet been established.