.Ukraine carries out some of its own biggest-ever drone assaults on Russia CNNUkraine Strikes Moscow Oil Refinery in Large Drone Torrent The Exchange JournalUkraine launches substantial drone assault on Russian energy facilities The Washington PostRussia Hits Kharkiv Sports Core After Moscow Refinery Fire BloombergFirefighters Extinguish Oil Depot Blaze in Southern Russia 2 Weeks After Drone Strike The Moscow Moments.