Former South Korean president Yoon Suk Yeol was sentenced to 30 years in prison on Thursday, 11 June 2026, after a Seoul court ruled he orchestrated a covert military drone operation over Pyongyang to manufacture a national crisis.
The Seoul Central District Court found Yoon guilty of abuse of power and aiding the enemy, concluding he had conspired in the October 2024 drone incursion from the outset, as reported by CNN.
It is the heaviest sentence yet handed to the disgraced leader.
Why Yoon Suk Yeol was sentenced to 30 years
The judges said Yoon had intended to provoke Pyongyang “into carrying out armed or equivalent acts against South Korea’s military or people”.
The bench found he wanted to “heighten inter-Korean military tensions and manufacture a national crisis” so that his short-lived martial law order could appear justified.
Aiding the enemy is among the gravest charges in South Korean law, normally reserved for wartime conduct, and its application to a former head of state is without precedent.
Legal observers had expected a heavy term once the abuse-of-power conviction was secured by prosecutors.
Inside the Pyongyang drone operation
The case centred on an October 2024 incursion in which South Korean military drones were flown across the border into North Korean airspace above the capital.
Prosecutors argued the flights were designed to bait Pyongyang into a hostile response that Yoon could then exploit for political ends.
The court accepted that Yoon had conspired in the plan from its earliest stages rather than merely failing to prevent it.
That finding of intent, rather than negligence, underpinned the severity of the 30-year term imposed by the bench at sentencing.
What the 30-year sentence means for South Korea
Yoon’s downfall began with his December 2024 martial law declaration, which lasted only hours before lawmakers forced its reversal.
He was later impeached, removed from office and has faced a cascade of criminal proceedings since, of which the drone case is the most serious to reach judgment.
Yoon’s lawyers rejected the verdict. They said he neither ordered nor later approved the operation, which they argued was unrelated to martial law and was instead a response to months of North Korean balloons stuffed with rubbish launched across the border.
The ruling lands while Yoon still faces separate charges tied directly to the martial law declaration itself, a case that carries its own potential penalties.
His legal exposure now stretches across multiple fronts in the Seoul courts.
His legal team is expected to appeal, which would send the case to South Korea’s higher courts and prolong a saga that has gripped the country for more than a year.
Until any appeal is heard, Yoon remains the highest-profile former leader jailed in the nation’s democratic era.
