How to impeach a South Korean president

South Korean President Yoon Suk Yeol is facing the threat of impeachment, with opposition lawmakers accusing him of violating his constitutional duty and committing a crime akin to treason when he declared martial law on Tuesday.

Yoon lifted the martial law declaration before dawn on Wednesday, just hours after the opposition-controlled parliament rejected his attempt to ban political activity and censor the media.

Below are details of the presidential impeachment process and past presidents who were impeached.