Russia's Navy officers, officials and workers attend a ceremony of launching the Rostov-on-Don Russian diesel-electric torpedo submarine at the Admiralteiskiye verfy shipyard in St. Petersburg, on June 26, 2014. Russia has launched today one of its new state-of-the-art submarines to be delivered to the Russian Black Sea fleet. The Rostov-on-Don belongs to the Varshavyanka-class (Kilo-class by NATO classification), which is characterized by advanced stealth technology, making it virtually undetectable when submerged, the Russian media reported. AFP PHOTO / OLGA MALTSEVA (Photo credit should read OLGA MALTSEVA/AFP via Getty Images)
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