A new approach to advancing accountability in Ukraine
Established by the European Union, the United States, and the United Kingdom in partnership with the Government of Ukraine, the Atrocity Crimes Advisory Group for Ukraine (ACA) supports Ukraine’s efforts to ensure justice and accountability for atrocity crimes committed in the context of Russia’s full-scale invasion.
230+
Total experts engaged since 2022 from all five ACA orgs
290+
Cases reviewed and advised throughout Ukraine
7,800
Total participants in 300+ trainings and study trips


Deep, international, up-to-date expertise
More than 230 experts bring decades of experience in the investigation and prosecution of international crimes, military and crime scene analysis, forensics, evidence databasing, and functional knowledge on specific kinds of crimes. Never before has there been this scale of information to be standardized and organized by teams under great stress. Since its inception, ACA has provided field evidence training on the ground and expert advising on priority legal issues and approaches, including:
- Deportation of children
- Cybercrimes
- Attacks on critical infrastructure
- Victims and witness support
- Crime of genocide
- Crime of aggression
- Environmental crimes
- Taking of civilian hostages
- Conflict-related sexual violence
- Support to regional prosecutor's offices


Multi-generational perseverance
Given the scale of criminality by members of Russia’s forces and officials, achieving justice will be a generational effort. It will require perseverance from prosecutorial authorities the world over to collect evidence, prepare case files, and move quickly when perpetrators come within their jurisdictional reach.
Commenting on the Establishment of ACA
“ACA is an essential element of the United States’ commitment that those responsible for such crimes will be held to account.”
“It is critical to ensure that all those responsible for the terrible atrocities committed during the unprovoked Russian military aggression in Ukraine are brought to justice. There can be no impunity for war crimes.”
“The atrocities we’ve witnessed in Ukraine since Russia’s illegal invasion are sickening. Those responsible must be held to account.”