Yoon Suk Yeol, born December 18, 1960, in Seoul, South Korea, is a lawyer and former public official who served as prosecutor general from 2019 to 2021 and as South Korea's president from 2022 to 2025.[1][2][5] Rising through a 26-year prosecutorial career, he gained prominence for investigating corruption during the Park Geun-hye and Lee Myung-bak presidencies, earning a reputation as a hardline anti-corruption figure.[1][2][4] In 2016, he contributed to the impeachment and conviction of President Park by working with Special Counsel Park Young-Soo, making him a national symbol of justice.[1] Appointed chief prosecutor of the Seoul Central District Prosecutors’ Office in 2017 by President Moon Jae-in, Yoon later clashed with Moon's administration, notably by probing Justice Minister Cho Kuk’s alleged corruption, which boosted his conservative popularity and led to his 2021 resignation.[1][2][4] As a political novice, Yoon won the March 9, 2022, presidential election for the People Power Party by the narrowest margin in South Korean history—48.56% to Lee Jae-myung’s 47.83%—and was sworn in on May 10.[1][2][3][4] He relocated the presidential office from the Blue House to Yongsan’s Defense Ministry compound, converting the former into a public park to symbolize reduced imperial power, though the move drew controversy.[1][2] Yoon adopted a hawkish stance on North Korea, prioritizing denuclearization over end-of-war declarations, enhancing U.S. alliance defenses, and responding firmly to provocations.[4] His presidency ended amid crisis: on December 3, 2024, Yoon briefly declared martial law to counter alleged “pro-North Korean” forces but reversed it hours later after National Assembly opposition.[1][3] Impeached on December 14, 2024, by a 204-85 vote after some party members defected, his powers were suspended, with Prime Minister Han Duck-soo acting as president; Yoon’s approval had plummeted to 11%.[1][3] (298 words)