Russia's Black Sea flagship which sank yesterday after an explosion on board may have been carrying nuclear warheads, analysts and experts have warned today, as a Russian politician said more than 400 sailors could have gone down with the ship. The Moskva, a Soviet-era guided missile cruiser, sank near the port of Sevastopol on Thursday after Ukraine said it hit the ship with two cruise missiles. Today, Mykhailo Samus, director of a Lviv-based military think-tank; Andriy Klymenko, editor of Black Sea News; and Ukrainian newspaper Defence Express all warned that the Moskva could have been carrying two nuclear warheads designed...