South Korean President Yoon Suk Yeol declared martial law late December 3 KST in the name of “eradicating pro-North Korean forces and to protect the constitutional order of freedom.” Within three hours, the National Assembly swiftly voted to repeal the decree with unanimous support across party lines. Three hours later, Yoon eventually conceded and revoked martial law. While Yoon complied by lifting the decree, the fallout—including mass protests, cabinet resignations, and a failed impeachment vote on December 7—has exposed deep divisions within the ruling People Power Party (PPP), leaving the government paralyzed and raising important questions about future governance and stability. Repercussions are already rippling through the Republic of Korea’s (ROK or South Korea) domestic and foreign policy, straining alliances and threatening progress in regional diplomacy. As investigations into the Yoon administration proceed and pressure mounts for him to step down, the nation faces an uncertain path forward, where critical decisions made in the coming days and weeks could define its political landscape for years to come.
How Did We Get Here?
The declaration of martial law came amid consistently low approval ratings of the Yoon administration, repeated calls for Yoon’s impeachment, and widespread criticism over his poor handling of domestic issues—including First Lady Kim Keon-hee’s alleged corruption—inflation, and what many viewed as pro-chaebol (conglomerate) policies. In a further setback for Yoon, the opposition party took the majority in the National Assembly in the April 2024 general elections, with the ruling PPP only winning 108 out of 300 seats. As a result, the Yoon administration constantly faced an uphill battle in pursuing its policy agenda. In fact, while enacting martial law, Yoon cited the 22 impeachment motions filed against government officials since his inauguration as roadblocks to the executive branch’s function and criticized the opposition Democratic Party (DP) for “anti-state activities.” And in the past, Yoon was accused of moving to consolidate greater military control.
Attention was first drawn to this issue in Yoon’s nomination of Defense Minister Kim Yong-hyun in August, who holds a long-standing relationship with Yoon, having attended high school together and served as a close advisor during his presidential campaign. Throughout Kim’s nomination, DP lawmakers alleged that his appointment was part of larger plans to declare martial law; following DP motions to impeach both the president and defense minister, Yoon accepted Kim’s resignation. This situation has triggered considerable domestic political fallout, highlighting the growing rifts within South Korea’s political sphere.
Domestic Political Fallout
Despite a unanimous vote of 190 parliament members to repeal martial law and PPP leader Han Dong-hoon stating that Yoon’s declaration was “wrong,” deep-seated divisions within the ruling coalition on how to deal with Yoon have created significant uncertainty. These divisions, reflective of a broader political impasse, have also hampered decisive action and left the path forward increasingly unclear. The vote for Yoon’s impeachment on Saturday, December 7, fell short of the 200 votes necessary, with over 100 PPP members choosing not to participate. Following the failed bid for impeachment, Han Dong-hoon and Prime Minister Han Duck-soo made a controversial joint address to the nation. The pair stated that Yoon would be relieved of his day-to-day duties, leaving national governance and foreign affairs up to them. However, their decision to take such an unprecedented step has raised alarms about its legality, as this “orderly resignation” does not align with the country’s constitution and appears to be nothing more than a thinly veiled power grab.
Following the failed impeachment attempt, the DP passed a bill to appoint a “permanent special counsel” to investigate treason charges against President Yoon, who is now subject to a travel ban. Also underway are multiple investigations involving several high-ranking officials, including former Interior Minister Lee Sang-min, former Defense Minister Kim Yong-hyun, and Army Chief Park An-su, who was appointed martial law commander. Additionally, key figures such as defense and counterintelligence chiefs, senior military generals, and top police officers are implicated, with reports indicating they played a significant role in shaping the martial law plan.
Meanwhile, the opposition party’s leader, Lee Jae-myung, is embroiled in his own battles. Recent polls indicate that Lee would be the top contender in a snap election, but his indictment in November for misuse of public funds during his 2022 election bid has introduced complications. If Lee’s appeal fails, he could not only lose his seat in the National Assembly, but also be banned from running for office for 10 years following conviction. The PPP has been accused of purposefully delaying Yoon’s impeachment or resignation to disqualify Lee from running in a snap election. On the other hand, if a snap election is called before Lee is sentenced by the Supreme Court, he will be cleared to run.
Foreign Policy Implications
The ongoing political turmoil in South Korea could also jeopardize the Yoon administration’s foreign policy achievements, which have been popular despite the president’s overall low approval ratings. As the domestic situation remains volatile, the ripple effects are already felt in South Korea’s foreign policy as the global community watches for developments and seeks to understand what exactly Yoon had planned. US Secretary of Defense Lloyd Austin canceled his trip to Seoul, and US-ROK nuclear deterrence talks were postponed. Subsequent political instability may have longer-term implications for the Yoon administration’s foreign policy agenda, particularly his efforts to maintain the momentum of a solid alliance with the United States, improved relations with Japan, and institutionalized trilateral cooperation between the United States, South Korea, and Japan. This political unrest in South Korea comes at a pivotal time as Seoul braces for major changes in the incoming Trump administration’s foreign and trade policies.
Within the US-ROK alliance, both sides are working to maintain open communication and reaffirm the strength and “ironclad” nature of the partnership. Top US officials have met and held talks with their counterparts to discuss developments and ensure the US-ROK combined posture remains strong and responsive. However, despite this close relationship, the United States was not given advance warning of Yoon’s declaration and labeled the decision as “badly misjudged.” The Biden administration has held up South Korea as a model democracy and, through the launch of the Nuclear Consultative Group, integrated Seoul into US planning for contingencies on the Korean Peninsula that might involve nuclear use. Yoon’s martial law gamble casts a pall over these US efforts to further bolster its ties with South Korea based on shared values.
Despite notable progress in Japan-ROK relations under the Yoon administration, the declaration of martial law has drawn immediate concern from Japan. In particular, Japan has voiced concern about the DP’s impeachment motion, which criticized references to “Japan-centered” policy and Yoon’s appointment of “pro-Japan” figures in key government posts. With a planned early-2025 visit to South Korea by Prime Minister Shigeru Ishiba marking the 60th anniversary of diplomatic relations up in the air, worries of deterioration in bilateral relations persist about the next South Korean president. This has prompted Japan to watch on with “particular and grave” concern.
Furthermore, Yoon’s martial law declaration has stained one of his key foreign policy objectives: turning South Korea into a “global pivotal state” that “advances freedom, peace and prosperity through liberal democratic values and substantial cooperation.” His declaration of martial law starkly contrasts the values that South Korea has tried to uphold.
What Comes Next?
Despite the failure of the December 7 impeachment vote, the DP said it will continue to push for Yoon’s impeachment and raise the vote every Saturday, with the following vote expected to be held on December 14. As of December 11 KST, some PPP lawmakers have said they would vote in the next session, a shift from their boycott of the first impeachment vote on December 7. If an impeachment motion passes the National Assembly, Prime Minister Han Duck-soo will become acting president. The Constitutional Court will then have 180 days to deliberate. If it upholds impeachment, the president would be immediately removed from office, and a successor would need to be elected within 60 days of the ruling.
Can Yoon come back from this if he resigns? The odds are looking slim. His presidency is, in effect, in a “vegetative state.” Yoon is under mounting pressure to step down; his approval rating has also plunged to just 17.3 percent. The PPP now faces a critical juncture: attempt to regain public trust by distancing itself from Yoon and supporting impeachment or risk political irrelevance and potentially look complicit in the president’s attempted coup. Failure to act decisively could force the party to completely rebrand and restart, as it did after Park Geun-hye’s impeachment in 2017 when the Saenuri Party dissolved and eventually rebranded as the PPP. Moreover, dragging this saga out will bring greater uncertainty to the country’s internal and external affairs.
Header image source: Office of the President of the Republic of Korea
Implications of South Korea’s Failed Impeachment Vote
By Kaitlyn King • Natalia Slavney
Korean Peninsula
South Korean President Yoon Suk Yeol declared martial law late December 3 KST in the name of “eradicating pro-North Korean forces and to protect the constitutional order of freedom.” Within three hours, the National Assembly swiftly voted to repeal the decree with unanimous support across party lines. Three hours later, Yoon eventually conceded and revoked martial law. While Yoon complied by lifting the decree, the fallout—including mass protests, cabinet resignations, and a failed impeachment vote on December 7—has exposed deep divisions within the ruling People Power Party (PPP), leaving the government paralyzed and raising important questions about future governance and stability. Repercussions are already rippling through the Republic of Korea’s (ROK or South Korea) domestic and foreign policy, straining alliances and threatening progress in regional diplomacy. As investigations into the Yoon administration proceed and pressure mounts for him to step down, the nation faces an uncertain path forward, where critical decisions made in the coming days and weeks could define its political landscape for years to come.
How Did We Get Here?
The declaration of martial law came amid consistently low approval ratings of the Yoon administration, repeated calls for Yoon’s impeachment, and widespread criticism over his poor handling of domestic issues—including First Lady Kim Keon-hee’s alleged corruption—inflation, and what many viewed as pro-chaebol (conglomerate) policies. In a further setback for Yoon, the opposition party took the majority in the National Assembly in the April 2024 general elections, with the ruling PPP only winning 108 out of 300 seats. As a result, the Yoon administration constantly faced an uphill battle in pursuing its policy agenda. In fact, while enacting martial law, Yoon cited the 22 impeachment motions filed against government officials since his inauguration as roadblocks to the executive branch’s function and criticized the opposition Democratic Party (DP) for “anti-state activities.” And in the past, Yoon was accused of moving to consolidate greater military control.
Attention was first drawn to this issue in Yoon’s nomination of Defense Minister Kim Yong-hyun in August, who holds a long-standing relationship with Yoon, having attended high school together and served as a close advisor during his presidential campaign. Throughout Kim’s nomination, DP lawmakers alleged that his appointment was part of larger plans to declare martial law; following DP motions to impeach both the president and defense minister, Yoon accepted Kim’s resignation. This situation has triggered considerable domestic political fallout, highlighting the growing rifts within South Korea’s political sphere.
Domestic Political Fallout
Despite a unanimous vote of 190 parliament members to repeal martial law and PPP leader Han Dong-hoon stating that Yoon’s declaration was “wrong,” deep-seated divisions within the ruling coalition on how to deal with Yoon have created significant uncertainty. These divisions, reflective of a broader political impasse, have also hampered decisive action and left the path forward increasingly unclear. The vote for Yoon’s impeachment on Saturday, December 7, fell short of the 200 votes necessary, with over 100 PPP members choosing not to participate. Following the failed bid for impeachment, Han Dong-hoon and Prime Minister Han Duck-soo made a controversial joint address to the nation. The pair stated that Yoon would be relieved of his day-to-day duties, leaving national governance and foreign affairs up to them. However, their decision to take such an unprecedented step has raised alarms about its legality, as this “orderly resignation” does not align with the country’s constitution and appears to be nothing more than a thinly veiled power grab.
Following the failed impeachment attempt, the DP passed a bill to appoint a “permanent special counsel” to investigate treason charges against President Yoon, who is now subject to a travel ban. Also underway are multiple investigations involving several high-ranking officials, including former Interior Minister Lee Sang-min, former Defense Minister Kim Yong-hyun, and Army Chief Park An-su, who was appointed martial law commander. Additionally, key figures such as defense and counterintelligence chiefs, senior military generals, and top police officers are implicated, with reports indicating they played a significant role in shaping the martial law plan.
Meanwhile, the opposition party’s leader, Lee Jae-myung, is embroiled in his own battles. Recent polls indicate that Lee would be the top contender in a snap election, but his indictment in November for misuse of public funds during his 2022 election bid has introduced complications. If Lee’s appeal fails, he could not only lose his seat in the National Assembly, but also be banned from running for office for 10 years following conviction. The PPP has been accused of purposefully delaying Yoon’s impeachment or resignation to disqualify Lee from running in a snap election. On the other hand, if a snap election is called before Lee is sentenced by the Supreme Court, he will be cleared to run.
Foreign Policy Implications
The ongoing political turmoil in South Korea could also jeopardize the Yoon administration’s foreign policy achievements, which have been popular despite the president’s overall low approval ratings. As the domestic situation remains volatile, the ripple effects are already felt in South Korea’s foreign policy as the global community watches for developments and seeks to understand what exactly Yoon had planned. US Secretary of Defense Lloyd Austin canceled his trip to Seoul, and US-ROK nuclear deterrence talks were postponed. Subsequent political instability may have longer-term implications for the Yoon administration’s foreign policy agenda, particularly his efforts to maintain the momentum of a solid alliance with the United States, improved relations with Japan, and institutionalized trilateral cooperation between the United States, South Korea, and Japan. This political unrest in South Korea comes at a pivotal time as Seoul braces for major changes in the incoming Trump administration’s foreign and trade policies.
Within the US-ROK alliance, both sides are working to maintain open communication and reaffirm the strength and “ironclad” nature of the partnership. Top US officials have met and held talks with their counterparts to discuss developments and ensure the US-ROK combined posture remains strong and responsive. However, despite this close relationship, the United States was not given advance warning of Yoon’s declaration and labeled the decision as “badly misjudged.” The Biden administration has held up South Korea as a model democracy and, through the launch of the Nuclear Consultative Group, integrated Seoul into US planning for contingencies on the Korean Peninsula that might involve nuclear use. Yoon’s martial law gamble casts a pall over these US efforts to further bolster its ties with South Korea based on shared values.
Despite notable progress in Japan-ROK relations under the Yoon administration, the declaration of martial law has drawn immediate concern from Japan. In particular, Japan has voiced concern about the DP’s impeachment motion, which criticized references to “Japan-centered” policy and Yoon’s appointment of “pro-Japan” figures in key government posts. With a planned early-2025 visit to South Korea by Prime Minister Shigeru Ishiba marking the 60th anniversary of diplomatic relations up in the air, worries of deterioration in bilateral relations persist about the next South Korean president. This has prompted Japan to watch on with “particular and grave” concern.
Furthermore, Yoon’s martial law declaration has stained one of his key foreign policy objectives: turning South Korea into a “global pivotal state” that “advances freedom, peace and prosperity through liberal democratic values and substantial cooperation.” His declaration of martial law starkly contrasts the values that South Korea has tried to uphold.
What Comes Next?
Despite the failure of the December 7 impeachment vote, the DP said it will continue to push for Yoon’s impeachment and raise the vote every Saturday, with the following vote expected to be held on December 14. As of December 11 KST, some PPP lawmakers have said they would vote in the next session, a shift from their boycott of the first impeachment vote on December 7. If an impeachment motion passes the National Assembly, Prime Minister Han Duck-soo will become acting president. The Constitutional Court will then have 180 days to deliberate. If it upholds impeachment, the president would be immediately removed from office, and a successor would need to be elected within 60 days of the ruling.
Can Yoon come back from this if he resigns? The odds are looking slim. His presidency is, in effect, in a “vegetative state.” Yoon is under mounting pressure to step down; his approval rating has also plunged to just 17.3 percent. The PPP now faces a critical juncture: attempt to regain public trust by distancing itself from Yoon and supporting impeachment or risk political irrelevance and potentially look complicit in the president’s attempted coup. Failure to act decisively could force the party to completely rebrand and restart, as it did after Park Geun-hye’s impeachment in 2017 when the Saenuri Party dissolved and eventually rebranded as the PPP. Moreover, dragging this saga out will bring greater uncertainty to the country’s internal and external affairs.
Header image source: Office of the President of the Republic of Korea
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