Russian officials didn't say what the drones targeted, but the city is home to two refineries and a petrochemical plant. Also on Monday, several Ukrainian drones sparked a fire at an industrial facility in the Tyumen region of western Siberia, said Gov. Last month, Ukrainian drones hit a refinery in Tyumen, more than 2,400 kilometers (about 1,500 miles) east of the border with Ukraine. “We do deliver entirely justified responses, and every Russian strike will be met with our response. By repeatedly striking routes for fuel, ammunition and reinforcements, Ukrainian commanders say they have made Russian logistics slower, costlier and hard to organize.