SEOUL, South Korea (AP) — South Korea’s Constitutional Court is in session Friday to rule on the impeachment of President Yoon Suk Yeol, four months after the conservative leader threw the country into turmoil with an ill-fated declaration of martial law. It will either remove him from office or restore his powers.

South Korea's Constitutional Court has upheld parliament's impeachment of President Yoon Suk Yeol and removed him from office

The BBC has spoken to people close to the president to understand what drove him to trigger an authoritarian takeover.