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.

Ukraine said Saturday it struck a Russian airbase in the Voronezh region. Russia has not confirmed the attack.

Ukraine inflicted significant damage on a Russian airbase Saturday, amid Moscow’s continued drone attacks on Kyiv, which killed at least one person overnight — part of a prolific Russian assault that has seemed to dash any hopes of a truce in the war.