South Korea’s Supreme Court Upholds Former President Yoon Suk Yeol’s Prison Sentence
SEOUL, South Korea — The highest court in South Korea has confirmed a seven-year prison term for Yoon Suk Yeol, former president, linked to his short-lived imposition of martial law during 2024. This marks the first of his many legal cases to be resolved by the Supreme Court.
The verdict supports an earlier decision by the Seoul High Court, which found Yoon guilty of denying Cabinet members their right to discuss the martial law decree, forging the official document to conceal this oversight, and using presidential security to thwart law enforcement during his post-impeachment arrest attempt.
Despite the martial law being in effect for only a few hours, it created significant disruption. Lawmakers managed to breach a barricade of armed forces at the National Assembly in Seoul, repealing the martial law and compelling Yoon’s Cabinet to end it.
Yoon, currently detained and absent from the courtroom, continues to face multiple trials. He is contesting a life sentence handed down for charges of rebellion, which is considered his most severe conviction.
His legal team expressed disappointment with the Supreme Court’s conclusion, criticizing the lack of comprehensive review given to such a major case. This decision is consistent with the Constitutional Court’s earlier judgment, which ousted Yoon from office in April 2025, citing the martial law declaration as baseless and improperly executed.
On December 3, 2024, Yoon summoned 11 Cabinet members to announce martial law on national television. Testimonies from several attendees, including former Prime Minister Han Duck-soo, indicate that Yoon merely informed them of his decision, bypassing any form of discussion. The Seoul High Court noted that nine other Cabinet members were either excluded from the meeting or informed too late.
The brief imposition of martial law thrust South Korea into a political quandary, causing governmental and diplomatic paralysis and unsettling financial markets. The situation began to stabilize following Lee Jae Myung’s victory in a hastened presidential election in June 2025.
Beyond the life sentence appeal, Yoon is also challenging a 30-year imprisonment related to accusations of ordering provocative drone flights in 2024. These flights, allegedly intended to justify martial law, were said by his defense to be in response to North Korea’s dispatch of trash-laden balloons into South Korea.
