The President of the European Commission Ursula von der Layen said today that a center will be opened in The Hague for the investigation of crimes and the collection of evidence for acts of aggression in Ukraine.

"The center will coordinate the collection of evidence and will be involved in the joint investigation team, which is supported by our agency Eurojust," said Leyen.

She is on an official visit to Kyiv together with several high-ranking EU representatives.

The International Criminal Court in The Hague is already investigating alleged war crimes and crimes against humanity related to Russia's invasion of Ukraine. The criminal court can prosecute if there is sufficient evidence that the crime of genocide was committed in Ukraine, but it has no jurisdiction to prosecute alleged acts of aggression committed by Russia.

According to the UN definition "act of aggression" is "an invasion or attack by the armed forces of any state, territory or any military occupation".