.Ukraine executes some of its own biggest-ever drone attacks on Russia CNNUkraine Hits Moscow Oil Refinery in Massive Drone Surge The Commercial JournalUkraine launches huge drone attack on Russian electricity structure The Washington PostRussia Strikes Kharkiv Sports Center After Moscow Refinery Fire BloombergFirefighters Extinguish Oil Depot Blaze in Southern Russia 2 Weeks After Drone Strike The Moscow Moments.