Ukraine said it struck a Russian air base on Saturday, while Russia continued to pound 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’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 fighter jets.

Writing on Facebook, the General Staff said it hit a depot containing glide bombs, a training aircraft and “possibly other aircraft.”

Russian officials did not immediately comment on the attack.

Such attacks on Russian air bases aim to dent Russia’s military capability and demonstrate Ukraine’s capability to hit high-value targets in Russia. Last month, Ukraine said it destroyed more than 40 Russian planes stationed at several airfields deep in Russia’s territory in a surprise drone attack.