MOSCOW, March 25. /TASS/. Russia’s air defense systems have destroyed another four Ukrainian drones in the air above the settlements of Boromlya, Borshchevaya, Oleshnya and Usok, Russian Defense Ministry Spokesman Major-General Igor Konashenkov said on Friday.

"Russia’s air defense systems have destroyed four Ukrainian drones in the air above the settlements of Boromlya, Borshchevaya, Oleshnya and Usok," he said.

According to the Defense Ministry spokesman, 261 unmanned aerial vehicles, 204 air defense missile systems, 1,587 tanks and other combat armored vehicles, 163 multiple rocket launchers, 636 field artillery pieces and mortars, and 1,397 military motor vehicles have been destroyed since the start of Russia’s special military operation in Ukraine.