A television frame grab taken from North Korean TV today (Dec. 29, 2011) shows Kim Jong Un during a memorial service for his father, Kim Jong Il. North Korean TV/AFP/Getty Images hide caption

itoggle caption North Korean TV/AFP/Getty Images

Kim Jong Un, center, walks with his hand on the limousine bearing his father Kim Jong Il's body earlier today in Pyongyang. North Korea's official Korean Central News Agency/AFP/Getty Images hide caption

itoggle caption North Korea's official Korean Central News Agency/AFP/Getty Images

In this image made from North Korean television, Kim Jong Un, center, apparently cries as he pays respect to his father. AP hide caption

itoggle caption AP

In Seoul today: South Koreans watch a television broadcast about the death of North Korean leader Kim Jong Il. Chung Sung-Jun/Getty Images hide caption

itoggle caption Chung Sung-Jun/Getty Images

In this photo released Friday by the Korean Central News Agency, fireworks explode in the night sky over Pyongyang to mark the 65th anniversary of the Workers Party. Korean Central News Agency via Korea News Service hide caption

itoggle caption Korean Central News Agency via Korea News Service

Undated photo released on Thursday, Sept. 30, 2010, by Korean Central News Agency via Korea News Servic Anonymous/Korean Central News Agency via Korea News Service hide caption

itoggle caption Anonymous/Korean Central News Agency via Korea News Service