Ukraine’s top military commander says his forces now control 1,000 sq km of Russia’s neighboring Kursk region, the first time a Ukrainian military official has publicly commented on the gains of the lightning incursion that has embarrassed the Kremlin.

Gen. Oleksandr Syrskyi made the statement in a video posted Monday to Ukrainian President Volodymyr Zelensky’s Telegram channel. In the video, he briefed the president on the front-line situation. “The troops are fulfilling their tasks. Fighting continues actually along the entire front line. The situation is under our control,” Syrskyi said.