Kim Yong Hyun on South Korea
TL;DR
Kim Yong Hyun's position on South Korea is defined by his central, leading role in the unconstitutional declaration of martial law in December 2024.
Key Points
He received a 30-year prison sentence on February 19, 2026, for his role in the December 2024 martial law attempt.
He had previously served as the Chief of the Presidential Security Service beginning May 11, 2022, under President Yoon Suk Yeol.
During his confirmation hearing in September 2024, he dismissed talk of martial law, stating the military would not accept such an order.
Summary
Kim Yong Hyun's connection to South Korea is defined by his actions as Minister of National Defense, culminating in his central role in the December 2024 emergency martial law declaration. He was a close confidant of President Yoon Suk Yeol, having served as the Chief of the Presidential Security Service, and was appointed Defense Minister on September 6, 2024, to support the President's security agenda. This agenda, as later revealed, included plans for military rule. During his brief tenure, he advocated for a hawkish stance on North Korea, including keeping South Korea's nuclear armament as an open option if US extended deterrence was insufficient, while simultaneously supporting deep security cooperation with the US and Japan.
His position became entirely defined by the failed attempt at an unconstitutional power seizure, for which he actively recommended the imposition of martial law. He ordered the military deployment to blockade the National Assembly to prevent lawmakers from lifting the declaration, and later resigned on December 5, 2024, after an impeachment motion was filed. His subsequent trial revealed that he was effectively second-in-command of the insurrection plot, leading to his conviction for insurrection and a 30-year prison sentence in February 2026.
Frequently Asked Questions
Kim Yong Hyun is currently incarcerated in South Korea after being convicted of insurrection for his role in the failed martial law declaration in December 2024. He was sentenced to 30 years in prison in February 2026.
As the Minister of National Defense, Kim Yong Hyun advised President Yoon to impose martial law and then issued the operational orders for the military deployment. The court recognized him as playing a central role in preparing for the measure.
Yes, Kim Yong Hyun was a close associate of President Yoon Suk Yeol, having known him since they attended the same high school. This long-time connection prompted his appointment to key security roles in the administration.
Sources4
Profile: New ROK Defense Minister Kim Yong-hyun
Kim Yong-hyun
Former Defense Minister Kim Yong-hyun Sentenced to 30 ...
Former South Korean President Yoon receives life ...
* This is not an exhaustive list of sources.