South Korean protesters wearing masks of North Korean leader Kim Jong-il, right,  and what protesters say is Kim's youngest son Kim Jong Un hold a mock nuclear missile during a rally against the North's succession in Seoul, South Korea, Tuesday, Sept. 28, 2010. North Korea's absolute leader Kim appointed his youngest son as an army general, giving the son his first known official title in an apparent sign that he is being groomed as the country's next leader. (AP Photo/Yonhap, Lim Hun-jung)

Photo by: Ahn Young-joon

South Korean protesters wearing masks of North Korean leader Kim Jong-il, right, and what protesters say is Kim's youngest son Kim Jong Un hold a mock nuclear missile during a rally against the North's succession in Seoul, South Korea, Tuesday, Sept. 28, 2010. North Korea's absolute leader Kim appointed his youngest son as an army general, giving the son his first known official title in an apparent sign that he is being groomed as the country's next leader. (AP Photo/Yonhap, Lim Hun-jung)