Russia may have lost three helicopters. This is claimed by military bloggers

On the night of November 10-11, Ukrainian drones attacked the Leningrad region, targeting the Ust-Luga port. This was one of Ukraine's largest operations this year, with reports of 150 drones shot down. However, Russian military channels reported losses of helicopters during the defense operation. The Telegram channel Fighterbomber indicated significant costs in defending St. Petersburg's airspace. Reports suggest that three experienced crews lost their lives, and various channels mentioned the loss of Ka-52 and Mi-8 helicopters. The exact circumstances of these losses remain unclear, with theories suggesting they may have been shot down by drones or friendly fire from Russian air defense. Russian authorities have not confirmed these losses, only stating that three port workers were injured in the drone attack.