Kim Jong-un (officially transcribed Kim Jong Un; Hangul: 김정은; Korean pronunciation: [kim. dzɔŋ. ɯn];[a] born 8 January 1983) is a North Korean politician. He has been Supreme Leader of North Korea since 2011 and Chairman (previously called first secretary) 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). He is the grandson of Kim Il-sung, who was the first leader of North Korea from 1948 to 1994. Kim is the first North Korean leader who was born after the country's founding.