Russia bombarded Ukraine’s second-largest city with massive strikes in the early hours of Saturday, its mayor said, one night after Moscow carried out one of the war’s largest aerial assaults on Ukraine.

Ukraine says that a large Russian drone-and-missile attack has targeted the eastern city of Kharkiv, killing at least three people and injuring 21

Donald Trump says Vladimir Putin told him Moscow would have to respond to Ukraine's attacks on Russian airfields. Meanwhile, the US president's NATO ambassador has demanded that countries agree to increase defence spending by 5% "now".