A Russian missile cruiser called "Moskva" in the Black was seriously damaged and had to be evacuated, according to Russia's TASS news agency.
Ukraine says they hit the ship with two Neptune anti-ship missiles earlier today. The Russian Defense Ministry claims ammunition detonated "as a result of a fire" aboard the major warship.
The "Moskva" is one of the Russian Navy's premiere ships, lead ship of the Slava-class cruisers.