The storied Russian warship Moskva, sank into the Black Sea on Thursday. Losing the vessel, built in Ukraine during the Soviet era and named after the Russian capital, represents a military setback and symbolic defeat for Russia as its troops regroup for a renewed offensive in eastern Ukraine after stumbling in the north. The Russian Defense Ministry said the Moskva – flagship of the country's Black Sea fleet – was being towed to port when it "lost its stability due to damage to the hull received during the fire from the detonation of ammunition. In the conditions of stormy seas, the ship sank." The Pentagon couldn't confirm the source of the damage, but Odesa Gov. Maksym Marchenko said on Telegram that Ukrainian forces struck the guided-missile cruiser with two missiles. Oleksiy Arestovych, an adviser to Ukraine's president, called the ship's sinking an event of “colossal significance." 📸: @maxartechnologies and Handout, Russian Defense Ministry/AFP via @gettyimages For the latest on the situation in Ukraine, click the link in our bio.