A court gave former President Yoon Suk Yeol a prison sentence. He will go to jail for five years. The court said he tried to declare martial law. This was a big problem for the country.
The problems started in December 2024. Yoon declared martial law. It lasted only six hours. He wanted to stop democracy. He planned to use the army.
Martial law made soldiers go to the National Assembly. People protested. Lawmakers had meetings. Yoon also tried to stop his arrest.
The judge said Yoon used his power badly. He did not protect the law.
Yoon is in another trial. Prosecutors want the death penalty. He is accused of stopping the government. He also planned to hurt election officials.
Yoon was removed from his job. His lawyers will ask for a new trial.