Ukraine called for more weapons and harsher sanctions after it blamed Russia for a missile attack that killed at least 52 people at a train station packed with women, children and the elderly fleeing the threat of a Russian offensive in the east.

President Volodymyr Zelenskiy called the strike in Kramatorsk in the eastern region of Donetsk a deliberate attack on civilians. The city's mayor estimated about 4,000 people were gathered there at the time.