Russia-Ukraine live news: UN says over 4.5 million have fled war

UN says 2.59m have gone to Poland, more than 686,000 to Romania and over 419,000 to Hungary

A grave with the bodies of civilians has been found in Buzova village near the Ukrainian capital Kyiv, a local official has said.

Qazet.az reports that Ukraine is preparing for “big battles” against Moscow’s forces in the east of the country, officials in Kyiv said.

In the Ukrainian city of Barkinkove, just west of Kramatorsk, volunteers are arming themselves to join the front line against Russian troops expected to regroup in eastern Ukraine.

The death toll from Friday’s train station bombing in Kramatorsk has risen to 52. Russia denies responsibility, saying missiles responsible for the attack were only used by Ukraine’s military.

Ukraine says more than 4,500 people have been evacuated from its cities through humanitarian corridors.

YouTube has blocked Duma TV, which broadcasts from Russia’s lower house of parliament.