North Korean leader Kim Jong-Un (R) visits Navy Unit 158 of the Korean People's Army in an undisclosed location, in this undated recent file photo released by the North's KCNA in Pyongyang February 7, 2012. A smiling Kim Jong-un led celebrations of his dead father's official 70th birthday celebrations in the North Korean capital on February 16, 2012, nearly two months after taking power, indicating a smooth transition in the one of the world's most closed states. Reuters Pictures logo Reuters Pictures 3 months ago

North Korean leader Kim Jong-Un (R) visits Navy Unit 158 of the Korean People's Army in an undisclosed location, in this undated recent file photo released by the North's KCNA in Pyongyang February 7, 2012. A smiling Kim Jong-un led celebrations of his dead father's official 70th birthday celebrations in the North Korean capital on February 16, 2012, nearly two months after taking power, indicating a smooth transition in the one of the world's most closed states.