SEOUL: South Korea`s parliament impeached acting President Han Ducksoo 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.

The impeachment of prime minister Han, the acting president since Yoon was impeached on Dec 14 for declaring martial lawon Dec 3, has pushed South Korea`s once-vibrant democratic success story into uncharted territory.

Finance Minister Choi Sang-mok, who assumed the position of acting president while the cases of Yoon and Han are considered by the Constitutional Court, convened the NationalSecurityCouncil, spoke with key officials including military leaders and vowed to do every-thing in his power to stabilise state affairs.

The unexpected imposition of martial law and the ensuing political upheaval sent shockwaves through Asia`s fourth-largest economy, and drew concerns from allies in the United States and Europe who had seen Yoon as a key partner in efforts to counter China, Russia and North Korea.

Han`s sudden ouster adds to the uncertainty, and Choi may also face removal if he too clashes with the opposition-led parliament.

`The government must do its best to ensure that the people do not become anxious, or the security of the country and people`s daily lives are not shaken, Choi said, according to a statement from his office.

Earlier, Choi had pleaded unsuccessfully with parliament to withdraw the plan to impeach Han, saying it would do serious damage to the economy.-Reuters