Secret Service: Russian warship sunk near Crimea. Secret Service: Russia Black Sea Fleet ship badly damaged and sunk on southern coast of annexed Crimean peninsula.

Explosions heard overnight on annexed Black Sea peninsula of Crimea. Ukraine has been defending itself against a full-scale Russian invasion for almost two years. The Ukrainian military has already sunk or at least seriously damaged Russian warships with missiles and maritime drones on several occasions. The extent of the damage could not initially be independently verified. So far there has been no reaction from the Russian side.