The Ukrainian army announced today, Saturday, that it "sunk a Russian submarine and inflicted damage on an S-400 surface-to-air missile system in the Crimea Peninsula occupied by Russia." The army added that the attack caused significant damage to four launchers of the (Triumph) air defense system yesterday, Friday. It mentioned that Ukrainian forces targeted the Russian submarine (Rostov-on-Don) and sank it in the port of Sevastopol in the Crimea Peninsula.