Russia’s Battlegroup North inflicted more than 210 casualties on Ukrainian troops and destroyed two enemy tanks in its area of responsibility over the past day, the Defense Ministry reported   MOSCOW, May 21. /TASS/. Russian troops struck a Ukrainian military airfield and an army training camp over the past day in the special military operation in Ukraine, Russia’s Defense Ministry reported on Wednesday. "Operational/tactical aircraft, attack unmanned aerial vehicles, missile troops and