During the night into Saturday, May 11, drones from the Main Intelligence Directorate (HUR) attacked the Volgograd Oil Refinery in Russia. It is part of the Lukoil corporation, reports RBC-Ukraine, citing its own sources. As sources noted, the attack occurred around 3:45 a.m. Currently, it is known that the primary oil processing units AVT-1 and AVT-6 at the refinery have been damaged. Intelligence is clarifying their current condition. At the same time, the control cable for air coolers was damaged, leading to the shutdown of 7 of them. Additionally, the smokestack of furnace P-1 was also dam…