.Ukraine executes among its own biggest-ever drone strikes on Russia CNNUkraine Attacks Moscow Oil Refinery in Large Drone Blast The Wall Street JournalUkraine launches enormous drone attack on Russian power structure The Washington PostRussia Strikes Kharkiv Athletics Center After Moscow Refinery Fire BloombergFirefighters Extinguish Oil Depot Blaze in Southern Russia 2 Weeks After Drone Strike The Moscow Moments.