Former South Korean President Yoon Suk Yeol Sentenced to Life Imprisonment for Martial Law Insurrection

Former South Korean President Yoon Suk Yeol Sentenced to Life Imprisonment for Martial Law Insurrection

2026-02-19 region

Seoul, 19 February 2026
A Seoul court delivered a historic verdict on 18 February 2026, sentencing former President Yoon Suk Yeol to life imprisonment for leading an insurrection through his brief martial law declaration in December 2024. The ruling marks the first time a former South Korean president has received such a severe sentence for actions whilst in office, fundamentally altering the nation’s political landscape and establishing unprecedented accountability for constitutional violations.

The Court’s Verdict and Key Sentences

The Seoul Central District Court delivered its judgment on 18 February 2026, with presiding judge Ji Gwi-yeon stating that Yoon’s actions “fundamentally damaged South Korea’s democracy and deserves a harsh punishment” [1]. The court found Yoon Suk Yeol, aged 65, guilty of leading an insurrection as the “ringleader” and sentenced him to life imprisonment [2][3]. Alongside Yoon, several key figures received substantial prison terms: former defence minister Kim Yong-hyun, who advised Yoon to impose martial law, was sentenced to 30 years imprisonment [1][2], whilst former intelligence commander Roh Sang-won received 18 years and former police chief Cho Ji-ho was sentenced to 12 years [4]. Former Seoul police chief Kim Bong-sik received 10 years, and former interior minister Lee Sang-min was given 7 years for their roles in the attempted insurrection [2][4].

The December 2024 Martial Law Declaration

The charges stemmed from events that unfolded on 3 December 2024, when Yoon declared martial law, citing the need to eliminate “anti-state forces” within the National Assembly, which he described as a “den of criminals” [2]. The martial law decree banned political activities and placed news media under military control, with armed troops raiding both the National Assembly and the National Election Commission [2]. The court determined that sending military forces to the National Assembly aimed to obstruct and paralyse its activities, with no plans for withdrawal [4]. However, public outrage forced Yoon to reverse the martial law declaration within six hours, triggering a political crisis that ultimately led to his impeachment on 14 December 2024 [2][3].

Yoon’s trial on criminal charges related to the martial law declaration began in April 2025, following his arrest in January 2025 and formal expulsion from office in April 2025 [2]. Since July 2025, Yoon has been held in the Seoul Detention Center in Uiwang, in a cell monitored by CCTV with limited amenities and restricted access to media [2]. Prosecutors had sought the death penalty, arguing that Yoon’s martial law declaration amounted to insurrection [2]. However, Yoon’s defence team vehemently contested the verdict, with lawyer Yun Gap-geun stating that the ruling “lacked legal basis and evidence” and describing it as “fiction” [1][4]. The defence claimed the judge was following a “pre-written script” and argued that the verdict ignored legal evidence [1][4].

Historical Context and Political Implications

This verdict draws stark comparisons to South Korea’s authoritarian past, particularly the 1996 trial of former presidents Chun Doo-hwan and Roh Tae-woo for their roles in military coups and the suppression of pro-democracy movements [5]. Chun Doo-hwan was initially sentenced to death in 1996 for insurrection and mutiny related to his 1979 coup and the massacre of pro-democracy protesters in 1980, though he was later pardoned in 1997 [2][5]. The court referenced the trial of Charles I of England to support the principle that even heads of state can be guilty of insurrection [4][5]. The ruling has generated intense political reactions, with the ruling Democratic Party criticising the court for not imposing the death penalty, whilst National Assembly Speaker Woo Won-shik stated that “the legal judgment that the state of emergency is an insurrection has been confirmed” [4][7]. Security was exceptionally tight outside the court on 18 February 2026, with 1,000 officers deployed to manage the situation [1][2]. Yoon has one week from 18 February 2026 to appeal the verdict, and if either side launches an appeal, the case will proceed to the Supreme Court [1][2].

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