North Korean leader Kim Jong-un (C) watches a flight training of the Korean People's Army Air Force Unit 378 in an undisclosed location in this undated recent picture released by the North's KCNA in Pyongyang January 28, 2012. REUTERS/KCNA (NORTH KOREA - Tags: POLITICS MILITARY) THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. IT IS DISTRIBUTED, EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS. NO THIRD PARTY SALES. NOT FOR USE BY REUTERS THIRD PARTY DISTRIBUTORS. QUALITY FROM SOURCE