Former South Korean president Yoon Suk Yeol was sentenced to 30 years in prison on June 12, 2026, for ordering military drone flights into North Korea in October 2024, the Seoul Central District Court ruled [1, 2, 3]. The court found the drone operations aimed to create a pretext for Yoon’s failed martial law declaration in December 2024 [1, 2, 3]. Prosecutors said the flights heightened military tensions with North Korea and sought to fabricate wartime conditions to justify the martial law attempt [1, 2, 4]. They accused Yoon of undermining state security by trying to “fabricate wartime conditions” [1].
Yoon was found guilty of aiding the enemy, abuse of power, and obstruction of rights related to the drone operation [3, 5, 6]. Judges stated Yoon approved the drone missions "believing he could arbitrarily use such powers for his own political gain" and that the operation “entailed the use of South Korea’s military capabilities for private purposes” [7]. The court ruled the flights were not justified under constitutional military duties [7, 8, 9].
Yoon and his legal team denied ordering or approving the drone flights. His lawyers said there was “no prior order or subsequent approval” from him for the operation and described it as a legitimate self-defense response to North Korean balloon provocations earlier in 2024 [1, 2, 3]. Yoon himself stated he declared martial law “solely for the sake of the nation” [1].
The October 2024 drone flights angered Pyongyang and included accusations from North Korea that propaganda leaflets were dropped on three occasions during the missions [4, 7, 8, 9]. North Korea’s leader Kim Jong Un’s sister called South Korean President Lee Jae Myung’s expression of regret over drone incursions earlier in 2026 “wise behaviour,” though tensions remain high [1, 2, 4].
Yoon had already been serving a life sentence since February 2026 for leading an insurrection linked to his December 3, 2024, martial law declaration, which lasted about six hours before the National Assembly overturned it amid protests [1, 2, 3, 10, 4]. Yoon was removed from office in April 2025 after the Constitutional Court upheld his impeachment over the martial law attempt [3, 4, 6].
Yoon faces multiple legal cases related to the martial law attempt, alleged corruption, and other issues. He is currently appealing both the life sentence and this new 30-year prison term [3, 4, 6, 11]. The court ruling marks the latest development in legal actions stemming from the October 2024 drone operations and the December 2024 political crisis in South Korea.
In January 2026, an investigation found other South Korean government officials had also sent drones into North Korea, unrelated to Yoon’s cases [1, 2, 4]. The consequences of these drone flights continue to affect diplomatic and security dynamics in the region.
