.Ukraine carries out some of its biggest-ever drone strikes on Russia CNNUkraine Attacks Moscow Oil Refinery in Gigantic Drone Barrage The Commercial JournalUkraine dispatches enormous drone attack on Russian electricity commercial infrastructure The Washington PostRussia Strikes Kharkiv Athletics Middle After Moscow Refinery Fire BloombergFirefighters Extinguish Oil Depot Blaze in Southern Russia 2 Weeks After Drone Strike The Moscow Moments.