.Ukraine performs some of its biggest-ever drone assaults on Russia CNNUkraine Attacks Moscow Oil Refinery in Gigantic Drone Surge The Commercial JournalUkraine catapults huge drone strike on Russian energy commercial infrastructure The Washington PostRussia Attacks Kharkiv Sports Center After Moscow Refinery Fire BloombergFirefighters Extinguish Oil Depot Blaze in Southern Russia 2 Weeks After Drone Strike The Moscow Moments.