A Seoul court sentenced former South Korean President Yoon Suk Yeol to 30 years in prison.
He was found guilty of sending drones into North Korean territory.
Prosecutors said the move was a pretext to declare martial law in 2024.
In February, he received a life sentence for leading an insurrection.
Yoon served as president from 2022 to 2025, was impeached on December 14, 2024, and removed from office.
