The flagship of Russia's Black Sea fleet has sunk after an explosion following an onboard fire, the country's Defense Ministry was quoted as saying by the Tass news agency Thursday, in a development that comes ahead of an expected major new offensive in eastern Ukraine.The ministry said the warship Moskva sustained hull damage, according to the Russian news agency. The ministry's statements came after Ukraine's military said Wednesday it had struck the ship with a Neptune short-range cruise missile.The Russian ministry said the ship was being towed to a naval base in nearby Crimea in a stor…READ FULL ARTICLE