South Koreans woke up with a bit of relief this morning, at the news Yoon had accepted that his bid for military rule had been overturned.
Yoon announced he would lift the martial law order after lawmakers unanimously rejected his decree, just hours after his surprising late night address on Tuesday.
For many here in South Korea, the declaration of martial law brings back memories of 1980, a time of military rule.
One person on social media posted "I just woke up and heard the news, and I was panicked".
"I didn't expect to see martial law in real life," another said.The lifting of martial law gives a reprieve for now - but many are still pondering the question: what will happen next?
Leadership of the People Power Party, Yoon's political party, is having an emergency meeting this morning to discuss their next moves following last night's chaos, according to South Korean media.
The closed-door meeting, assembled at 7am local time (10pm GMT), is chaired by the party's leader Han Dong-hoon. According to major broadcaster MBC, the majority of the party's supreme council members have agreed to demand that Yoon leave the party "in order to protect the spirit of the Constitution"
The meeting also agreed to demand the resignations of all State Council members who failed to prevent the martial law, as well as the dismissal of Defence Minister Kim Yong-hyun, who reportedly proposed the idea.
South Korean protesters hold a banner that read "we condemn Yoon Suk Yeol's illegal martial law" during a rally
Even after President Yoon Suk-yeol lifted the declaration of martial law, protests continued outside the National Assembly in Seoul's Yeongdeungpo District.
Angry citizens filled the streets, chanting, "Arrest Yoon Suk Yeol".
But despite the previous night's headline-making events, there was also surprising normalcy in South Korea this morning.
Schools across the country opened as usual, with the Ministry of Education announcing late last night that all classes and activities would proceed as usual.
Government services, including at courts and district offices, are also operating without disruption, and banks remain open.
US Secretary of State Antony Blinken said the United States had "watched closely" developments in South Korea over the past 24 hours, urging calm as pressure on Yoon continues to build.
"We continue to expect political disagreements to be resolved peacefully and in accordance with the rule of law," Blinken said in a statement.
Washington appears to have been blindsided by President Yoon's declaration of martial law, with the White House earlier saying it was "relieved" at its reversal
President Yoon Suk Yeol's staff have offered to resign en masse following his short-lived decision to declare a state of martial law on Tuesday, according to Yonhap News.
President Yoon himself is yet to make a public appearance.
South Korea's Kospi index is down more than 1% in morning trading after the country's finance ministry said it stood ready to support financial markets.
The won has been recovering after overnight losses of more than 1% against the US dollar.
"All financial, FX markets as well as stock markets will operate normally," a goverment statement said.
"We will inject unlimited liquidity into stocks, bonds, short-term money market as well as forex market for the time being until they are fully normalised."
That announcement came after President Yoon Suk Yeol's move to lift a martial law declaration he imposed overnight.
Meanwhile, the Bank of Korea is also reportedly holding an unplanned meeting which was abruptly scheduled for this morning.
Elsewhere in the region markets were mixed. Japan’s Nikkei 225, external was trading 0.3% higher and Australia's ASX 200 was down 0.4%.
The entrance to South Korea’s National Assembly remains heavily guarded by police, and journalists must present identification to gain access.
The atmosphere is much calmer compared to the previous night’s chaos, though a small group of protesters continues to chant, “President Yoon should step down.”
Earlier, two elderly men attempted to force their way into the assembly, questioning why they were being denied entry, but they were immediately stopped by the police.
Inside the main building, lawmakers are condemning President Yoon to the journalists who have gathered here to keep an eye on today's events
Protests are starting in South Korea as the country wakes up hours after South Korean President Yoon Suk Yeol lifted the martial law order.
They're demanding Yoon resigns for making the decision to briefly declare martial law.
Protesters are gathering in Seoul holding signs in near-freezing temperatures that are hovering around -1 degree Celsius.
President Yoon Suk Yeol's morning schedule for Wednesday has been cancelled, according to an official from his office.
Yoon had previously been due to preside over a meeting at 10:00 local time, but has now withdrawn from the event.
He is yet to make a public appearance since declaring martial law on Tuesday, and opposition lawmakers have signalled their intention to put forward a bill to potentially impeach him in the coming hours if he doesn't resign.
Cho Kuk, the leader of the Rebuilding Korea Party, stands in front of the National Assembly to address citizens about the emergency martial law incident that takes place there today. Leader Jo explains that by the morning of December 4, 2024, in Seoul, South Korea, he will submit an impeachment motion against President Yoon Suk-yeol.
Cho Kuk, the leader of the Rebuilding Korea Party, stands in front of the National Assembly to address citizens .South Korea's main opposition party has called on President Yoon Suk Yeol to resign or face impeachment, following his decision to briefly declare martial law in the democratic nation.
"It was clearly revealed to the entire nation that President Yoon could no longer run the country normally. He should step down," Park Chan-dae, a senior member of the Democratic Party, said in a statement, according to Reuters.
As we reported earlier, a group of approximately 40 South Korean lawmakers could put forward a bill to impeach President Yoon Suk Yeol as soon as Wednesday, according to the Yonhap news agency.
One of South Korea's largest labour unions - the Korean Confederation of Trade Unions (KCTU) - has called on its members to strike until President Yoon Suk Yeol resigns.
In a post on Facebook, the KCTU described Yoon's short-lived declaration of martial law as a "crime of insurrection", while calling on its more than 1 million members to gather in Seoul and other regional locations on Wednesday morning, to oppose the move.
"Yoon Suk-yeol has chosen the irrational and anti-democratic method of martial law to extend his political life as he has been driven to the edge," the group said in an earlier statement.
"The people will not forgive this. They remember the fate of regimes that declared martial law," it added.
Daniel Russel, an American diplomat, has told the BBC that North Korea is likely to take advantage of the political instability caused by President Yoon Suk Yeol's shock announcement of martial law.
Yoon had initially said the move was necessary to protect the country from North Korea's communist forces and to eliminate "anti-state elements".
Russel, the former Assistant Secretary of State for East Asian and Pacific Affairs, said this claim had been "pretty far-fetched".
"But you can be awfully certain that now North Korea is in fact licking its chops that it’s going to take advantage of any and all political instability and turmoil in the south," he said.
He added that "political turbulence and more demonstrations" were to be expected in the country, as it "wrestles with either an impeachment or conceivably President Yoon stepping down".
President Yoon's declaration of martial law was a "legal overreach and a political miscalculation", according to Leif-Eric Easley, a professor of international studies at Ewha Womans University in Seoul.
Easley went on to say: "For South Korea’s domestic politics and international reputation, this may be more damaging than January 6th" - referencing when rioters smashed through barricades and ransacked the US Capitol in 2021 with the goal of stopping the certification of Joe Biden's presidential election.
"With extremely low public support and without strong backing within his own party and administration, the president should have known how difficult it would be to implement his late-night decree," Easley said of Yoon.
"He sounded like a politician under siege, making a desperate move against mounting scandals, institutional obstruction, and calls for impeachment, all of which are now likely to intensify.
"North Korea will probably take a wait-and-see approach toward these events, but it cannot be ruled out that Pyongyang will attempt to exploit divisions in Seoul."
The protesters are still here, they've been here all night.
Within the last few hours, President Yoon has accepted that his bid for military rule has been overturned. That news was greeted with cheers from protesters here.
They say that they will remain for now and we’ve heard that more gatherings could be planned across Seoul.
The next thing that we’ve heard is that there may be proceedings underway to try to impeach President Yoon if he doesn’t stand down.
This is a South Korean leader whose career is now on the brink. It’s difficult to see how he survives this and the other big question that many people are asking is why did he do this?
This is already a deeply unpopular president, this is somebody who couldn’t get anything through parliament. So you can see the frustration, but this was a very drastic move that was never likely to work.
As we've seen, it was democratically overthrown. He didn't have the votes in parliament. So when it comes to this kind of a drastic move it's difficult to see the logic behind it.
The next key question is: what happens next - will he stand down or will he be impeached?