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.

KYIV, Ukraine (AP) — Russia fired more than 700 attack and decoy drones at Ukraine overnight, topping previous nightly barrages for the third time in two weeks, part of Moscow’s intensifying aerial and ground assault in the three-year war, Ukrainian officials said Wednesday.

Ukraine’s military General Staff said that Ukrainian forces had struck the Borisoglebsk air base in Russia’s Voronezh region, describing it as the home base of Russia’s Su-34, Su-35S and Su-30SM fight