Summary (updated)

South Korean President Yoon Suk Yeol declared martial law late Tuesday to counter “anti-state” forces, accusing opposition lawmakers of pro-North Korean sympathies.

Parliament, controlled by the opposition, quickly voted to nullify the declaration, calling it unconstitutional.

Protesters and lawmakers denounced Yoon’s move as authoritarian, echoing South Korea’s pre-democracy era.

Military personnel withdrew following the vote, and Yoon promised to lift martial law after a Cabinet meeting.

Critics warned of democratic backsliding. This marks South Korea’s first martial law declaration since democratization in 1987.