Han Duck-soo is a South Korean diplomat, economist, and politician who served as acting president of South Korea from 14 to 27 December 2024 and the 38th and 48th prime minister of South Korea, serving from 2007 to 2008 and since 2022. Since 27 December 2024, Han has been suspended from his prime ministerial powers following his impeachment by the National Assembly of Korea. Han is the fifth person to hold the prime minister's office twice, having previously served under President Roh Moo-hyun from 2007 to 2008. He also held office as ambassador to the United States from 2009 to 2012 and as chairman of the Korea International Trade Association from 2012 to 2015.