Air assaults on Saturday killed at least four people. Kharkiv’s mayor described an overnight strike as “the most powerful attack” since the beginning of the war.

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.

One of the bombs hit the Children's Railway, a popular gathering place for families in central Kharkiv, Governor Oleh Syniehubov said.