A Ukrainian sea drone damaged the "Samum" small Russian missile ship in an attack at the entrance to occupied Crimea's Sevastopol Bay on Thursday and the vessel had to be towed away for repairs, a Ukrainian intelligence source said on Friday.
Russia's defense ministry said in a statement on Thursday that it repelled an attack on the Samum in the Black Sea, during which it destroyed a naval drone. Reuters could not independently verify the two accounts.