North Koreans walk on the banks of the Yalu River which separates the North Korean town of Sinuiju from the Chinese border town of Dandong on the second anniversary of the death of former leader Kim Jong-Il, December 17, 2013.  North Korean leader Kim Jong-Un presided over a  major remembrance ceremony on the second anniversary of the death of his father and former leader Kim Jong-Il. The meeting came days after the shock execution of Kim Jong-Un's uncle and one-time political mentor, Jang Song-Thaek -- a purge that raised questions about the stability of the current regime in Pyongyang.        AFP PHOTO/Mark RALSTON        (Photo credit should read MARK RALSTON/AFP/Getty Images)