South Korean president Yoon Suk Yeol faces political turmoil after his controversial declaration of martial law on 3 December triggered calls for impeachment and police investigations into alleged insurrection. Opposition lawmakers accuse him of abusing power to suppress dissent under the guise of countering North Korea. The impeachment motion, set for a Saturday vote, requires a two-thirds majority in parliament, with opposition parties needing eight votes from Yoon’s ruling People Power Party (PPP) to pass. The martial law declaration, made during a late-night televised address, sparked immediate backlash. Armed troops attempted to block parliament but were repelled. Critics called the declaration unconstitutional. Yoon’s actions have divided his party and drawn widespread criticism. If he were to be impeached, the constitutional court would determine the outcome; prime minister Han Duck-soo could act as interim leader.