Kim Jong-un
Kim Jong-un (officially transcribed Kim Jong Un; ; ; born 8 January 1984) is a North Korean politician serving as Supreme Leader of North Korea since 2011 and Leader of the Workers' Party of Korea since 2012. Kim is the second child of Kim Jong-il (1941–2011) and Ko Yong-hui (1952–2004). The grandson of Kim Il-sung, the first leader of North Korea from 1948 to 1994, he is the first North Korean leader to have been born after the country's founding.
Kim Jong-nam
In late September 2010, his younger half-brother Kim Jong-un was made heir-apparent. Kim Jong-un was declared Supreme Leader of North Korea on 24 December 2011 after the death of Kim Jong-il. The two half-brothers had never met, because of the ancient practice of raising potential successors separately.