.Ukraine accomplishes some of its own biggest-ever drone strikes on Russia CNNUkraine Hits Moscow Oil Refinery in Substantial Drone Blast The Commercial JournalUkraine dispatches large drone assault on Russian power facilities The Washington PostRussia Attacks Kharkiv Sports Center After Moscow Refinery Fire BloombergFirefighters Extinguish Oil Depot Blaze in Southern Russia 2 Weeks After Drone Strike The Moscow Times.