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's anti-aircraft systems downed 120 Ukrainian drones overnight, mostly in regions bordering Ukraine, the Russian Defence Ministry said on Sunday, reporting no damage. More than three years into the war,