Former President Yoon Suk Yeol of South Korea was found guilty on Friday for ordering military drones to cross into North Korea, aiming to heighten tensions on the Korean Peninsula and fabricate a justification for imposing martial law.
At 65, Yoon has endured multiple criminal charges stemming from his impeachment and removal last year after he illegally declared martial law in December 2024. A court convicted him of orchestrating an insurrection and sentenced him to life imprisonment in February.
He received a 30‑year term for the drone campaign, the second‑most serious charge against him — “undermining South Korea’s military interests or aiding an enemy state” — which carries a maximum penalty of life imprisonment. Yoon is the first former president in South Korean history to be convicted of this offense.
A three‑judge panel of the Seoul Central District Court determined that Yoon and his associates dispatched drones across the heavily fortified inter‑Korean border in late 2024, seeking to inflame military tensions with North Korea to provide a pretext for a martial‑law declaration.
A special prosecutor had requested a 30‑year sentence, describing the operation as “an anti‑state and anti‑national crime.”
Two of Yoon’s co‑conspirators were also sentenced on Friday: his former defense minister, Kim Yong‑hyun, was sentenced to 30 years, and his former counter‑intelligence commander, Lieutenant General Yeo In‑hyong, received 15 years, both having previously served lengthy terms for roles in Yoon’s martial‑law declaration.
“The defendants employed a military pretext to provoke North Korea, thereby engineering a state of emergency,” wrote presiding judge Lee Jeong‑yeop in the ruling.
Yoon’s lawyers announced an appeal, arguing the drone flights were a legitimate response to North Korean balloon‑borne trash campaigns in 2024.
“The special counsel’s indictment and today’s verdict constitute an episode that inflicted a deep wound on South Korea’s security capabilities and its liberal democratic foundations,” they stated.
However, the court concluded that Yoon directed the drone operation “for a private purpose unrelated to national security or national defense.”
In October 2024, North Korea accused South Korea of flying unmanned drones over Pyongyang and warned of military retaliation, claiming the drones had dispersed “leaflets full of political propaganda and slander” against leader Kim Jong‑un.
South Korea neither confirmed nor denied the allegation at the time.
South Korean military officers later told investigators that they were ordered to conduct drone flights over Pyongyang between October and November, though they claimed unawareness of any connection to Yoon’s martial‑law plans.
Despite North Korea’s lack of response, Yoon proceeded with his plans and, on the night of December 3, declared martial law, plunging the nation into its most severe political crisis in decades. Armed troops stormed the National Assembly, with Yoon insisting the drastic measures were necessary to eliminate what he called “anti‑state” forces and a “den of criminals” within Parliament, which was dominated by the opposition party.
The move sparked immediate backlash.
Thousands of citizens gathered at the National Assembly, blocking troops from seizing the building and preventing the arrest of opposition leader Lee Jae Myung and other political rivals of Yoon. Their intervention allowed lawmakers to reconvene and vote down the martial‑law decree, forcing Yoon to withdraw it after only six hours.
Lee, who won the presidency a year earlier, said in December that South Korea should apologize to North Korea for Yoon’s drone operations, though he feared such an apology could ignite controversy in South Korea’s polarized political climate.
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