UAVs attack an oil refinery in Saratov, Russia Against the background of the attack, Russian fighter jets began to withdraw from the Engels-2 military airport. According to monitoring channels, after takeoff the planes change their course to the north. The Saratov refinery is capable of processing up to 7 million tons of oil per year. The enterprise produces gasoline, diesel and aviation fuel, as well as lubricants for the Russian military.