Ukraine said it struck a Russian air base on Saturday, while Russia continued to attack Ukraine with hundreds of drones overnight as part of a stepped-up bombing campaign that has dashed hopes for a breakthrough in efforts to end the more than 3-year-old war.

Moscow targeted regions across Ukraine with some 101 drones, Zelenskyy said. Russia on Friday had launched its largest overnight strike of the war, firing 539 drones and around a dozen missiles, according to Ukraine's air force.