James Heappey said the West is gathering evidence that can be used in a future prosecution, but added in interviews: What you see on your TV screens is a war crime.
Russia said humanitarian corridors out of Sumy, Kyiv, Chernihiv, Kharkiv and Mariupol would be reopened today after the first successful evacuation out of Sumy yesterday.
The United States and Britain announced on Tuesday they were cutting off Russian energy imports while multinationals Shell and BP said they would halt new oil and gas purchases, in a major tightening of the economic chokehold on Moscow over its invasion of Ukraine.