South Korean soldiers face a North Korean soldier standing at the border village of Panmunjom in the demilitarized zone between North and South Korea on Thursday. North Korea's neighbors are reassessing their policies following the death of North Korean leader Kim Jong Il. Wally Santana/AP hide caption

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Hundreds of North Koreans queue up to mourn the death of Kim Jong Il in front of a portrait of him in Pyongyang's Kim Il Sung Square on Wednesday. With preparations for next week's state funeral still under way, attention is turning to Kim's son and heir apparent, Kim Jong Un. AP hide caption

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Park Sang-nak, a North Korean defector, displays anti-North Korea leaflets before sending them by balloon into North Korea, at Imjinggak peace park in South Korea near the Demilitarized Zone dividing the two Koreas on Wednesday. Defectors from the North are hoping the death of North Korean leader Kim Jong Il may provide an opportunity for political change. Yang Hoi-Sung/AFP/Getty Images hide caption

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Kim Jong Un (center) pays his respects to his father, former leader Kim Jong Il, who is lying in state at the Kumsusan Memorial Palace in Pyongyang in this still picture taken from video footage aired by Korean Central TV of North Korea on Dec. 20. Reuters TV/Reuters /Landov hide caption

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South Korea's nuclear envoys visit a warehouse with unused nuclear fuel rods at North Korea's main nuclear plant in Yongbyon, North Korea, in 2009. Following the death of Kim Jong Il, it is not clear how a new leader, presumably Kim Jong Un, will deal with the nuclear program. Anonymous/South Korean Foreign Ministry/AP hide caption

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Kim Jong Un, who is expected to become North Korea's next leader, claps after inspecting the construction site of a power station. This undated photo was released by the Korean Central News Agency on Nov. 4, 2010. AP hide caption

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North Korean residents line up to receive food rations at a Red Cross distribution center in Tongsin, North Korea, in 1997. Discussions over U.S. food aid to the reclusive country were to take place Monday. "You could, in a very real sense, see the needs for food assistance," said an official with Mercy Corps, after a September 2011 visit to the country. Lasse Norgaard/AP hide caption

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Korean Central News Agency photo released on Jan. 18, 2009, showing North Korean leader Kim Jong Il posing with soldiers. STR/AFP/Getty Images hide caption

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