South Korea's acting president faces an impeachment vote on Friday, intensifying a political crisis as the Constitutional Court meets for its first hearing on suspended President Yoon Suk Yeol's short-lived martial law declared on Dec.

South Korea’s President Yoon Suk Yeol again declined to appear for questioning by investigators over his martial law declaration as the embattled leader seeks to first defend himself at an impeachment trial.

South Korea's parliament impeached acting President Han Duck-soo on Friday, less than two weeks after suspending President Yoon Suk Yeol's powers over his short-lived declaration of martial law, plunging the country deeper into political chaos.