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.

Russia launched 550 drones and missiles across Ukraine overnight in the largest aerial assault since the war began. The capital Kyiv was the primary target.

Russia pounded Ukraine with hundreds of drones and missiles on Friday in the largest aerial attack of the three-year war — just hours after President Trump admitted he was “disappointed” with his call with Russian President Vladimir Putin.