The undated photo provided by Korean Central News Agency (KCNA) on March 14, 2013 shows Kim Jong Un, top leader of the Democratic People's Republic of Korea (DPRK), watching a live shell firing drill at the southwest sector of the front line. Kim Jong Un watched and guided the drill which was conducted by the Jangjae Islet defense detachment and the Mu Islet artillery detachment. [Xinhua]