.Ukraine executes some of its own biggest-ever drone attacks on Russia CNNUkraine Attacks Moscow Oil Refinery in Extensive Drone Onslaught The Commercial JournalUkraine catapults gigantic drone assault on Russian energy structure The Washington PostRussia Hits Kharkiv Sports Core After Moscow Refinery Fire BloombergFirefighters Extinguish Oil Depot Blaze in Southern Russia 2 Weeks After Drone Strike The Moscow Times.