.Ukraine performs one of its own biggest-ever drone strikes on Russia CNNUkraine Attacks Moscow Oil Refinery in Extensive Drone Plethora The Commercial JournalUkraine catapults massive drone strike on Russian energy structure The Washington PostRussia Strikes Kharkiv Sports Core After Moscow Refinery Fire BloombergFirefighters Extinguish Oil Depot Blaze in Southern Russia 2 Weeks After Drone Strike The Moscow Times.