South Korean lawmakers have called on President Yoon Suk Yeol to resign after he declared martial law, sparking a political crisis in Asia's fourth-largest economy.
"We have presented an impeachment motion prepared urgently," said representatives of opposition parties, which include the main opposition Democratic Party.
Under the South Korean Constitution, the support of two-thirds of the 300-member National Assembly is required to impeach a sitting president. So 200 votes are needed to dismiss the President, while the Democratic Party, small opposition parties and independents together have only 192 seats.
That way they will need the support of at least eight members of Yoon's People's Power Party to pass the impeachment motion. The motion to remove the President is then expected to be submitted to the plenary session of the National Assembly on Thursday and the vote is likely to be held on December 6 or 7.
If Yoon is impeached, he will be stripped of power until the Constitutional Court decides his fate. Prime Minister Han Duck-soo, the number two man in the South Korean government, will assume presidential responsibilities.
After the vote, the 190 lawmakers present in the House of National Assembly unanimously blocked the measure and President Yoon announced the cancellation of his martial law decision. The leader of the ruling People's Power Party called for Defense Minister Kim Yong-hyun to be fired and the entire cabinet to resign.
Yoon had appealed to the nation in a televised address that martial law was necessary to protect the country from North Korea and pro-North anti-state forces and to protect constitutional order. Some experts say Yoon violated the Constitution in the way he declared martial law.
Protesters outside the National Assembly shouted and clapped after the decision was overturned. More protests are expected from South Korea's largest union coalition, the Korean Confederation of Trade Unions, which plans to hold a rally in Seoul and vows to strike until Yoon resigns.
The US embassy urged US citizens in South Korea to avoid areas where protests are taking place, while advising employees to work from home.