Russian submarine sunk in Crimean port, Ukraine claims CNNIt’s Possible A Ukrainian Missile Blew Up Russia’s ‘Rostov-On-Don’ Submarine—For The Second Time In 11 Months ForbesUkraine accuses Russian forces of killing, dismembering prisoner-of-war ReutersUkraine intensifies its long-range strikes, sinking a Russian submarine and striking an airfield ABC NewsRussian Black Sea Fleet Submarine Destroyed in Crimea Strike Newsweek