.Ukraine performs some of its own biggest-ever drone strikes on Russia CNNUkraine Attacks Moscow Oil Refinery in Substantial Drone Barrage The Commercial JournalUkraine launches enormous drone attack on Russian energy structure The Washington PostRussia Attacks Kharkiv Sports Midpoint After Moscow Refinery Fire BloombergFirefighters Extinguish Oil Depot Blaze in Southern Russia 2 Weeks After Drone Strike The Moscow Moments.