Off Syrian coast, Russian warship backs up air campaign (3) Patrolling some 10 nautical miles (13 kilometres) from the Syrian shore in the east of the Mediterranean sea, the Moskva -- the flagship of Russia's Black Sea Fleet based in Crimea -- is the largest warship the Kremlin has sent to back up its bombing campaign in the war-torn nation. IMAGES - images of the Russian naval facility in Tartus (TO ACCOMPANY VID832775_EN, VID832795_EN)