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</html><thumbnail_url>https://www.dailynk.com/english/wp-content/uploads/sites/2/2013/04/DNKF00010463_List.jpg</thumbnail_url><thumbnail_width>160</thumbnail_width><thumbnail_height>109</thumbnail_height><description>Over the last three years North Korea has significantly stepped up its production of submersible vessels such as midget submarines, according to an inside source. The sinking of the South Korean corvette &#x2018;Cheonan&#x2019; in March 2010 by just such a North Korean midget submarine is said to have caused the authorities to appreciate the potential [&hellip;]</description></oembed>
