Ukraine’s long-distance armed drones struck a major Russian oil refinery and a military base for Moscow’s elite own UAV unit in an overnight assault, Kyiv said. Ukraine’s General Staff released video of the early Sunday strike showing the Novokuybyshevsk refinery , in Russia’s Samara region, after the latest drone assault on Moscow’s struggling oil facilities, the Kyiv Independent reported . The refinery is one of Russia’s 10 largest oil facilities, with the Novokuybyshevsk site producing an