South Korea's Political Crisis and Economic Slowdown Put Its Next Chapter to the Test

A democratic recovery meets an economy under strain

South Korea entered June 2025 with a new president, returning foreign investors and unresolved strains in its economy and political system. President Lee Jae-myung's election followed a crisis in which President Yoon Suk Yeol declared martial law in late 2024, only for the National Assembly to overturn it within six hours. The confrontation exposed weaknesses in democratic governance, while the response showed how quickly lawmakers and citizens could defend constitutional rules.

The economic picture was also troubling. GDP, the measure of goods and services produced by an economy, recorded a negative 0.8 percent change in the first quarter of 2025. Construction contracted by more than 20 percent in April compared with the previous month. The Korea Development Institute (KDI) described the economy as being in a "weak state," pointing to struggling construction, slowing exports and limited job growth.

Foreign investors nevertheless returned as net buyers after the political crisis was resolved and Lee won the presidency in June. Their purchases helped push the KOSPI stock index to its highest level in nearly a year and supported a stronger won. Those developments offered a more hopeful signal alongside weak investment and pressure on trade.

As of June 13, 2025, South Korea's situation combined immediate disruption with problems that had developed over a longer period. Political confrontation, social divisions, an aging population and dependence on exports were all weighing on a country long celebrated for rapid economic development and democratic transformation.

The central issue was whether the new leadership could turn restored political order into effective government and broader economic confidence. Understanding that challenge requires looking at the martial law crisis, the divisions behind it and the pressures that a change of president alone cannot resolve.

How the martial law crisis unfolded

Yoon's declaration came as his approval ratings were falling and opposition to his administration was mounting. Martial law raised memories of South Korea's authoritarian past and brought the relationship between presidential power and democratic institutions into immediate focus.

The National Assembly swiftly overturned the declaration. Lawmakers from across the political spectrum united to defend constitutional norms, and civil society mobilized rapidly to prevent a slide into authoritarianism. The reversal was peaceful and took place within six hours.

The political and economic developments stretched across several months:

• Late 2024: Yoon declared martial law, which the National Assembly overturned within six hours.
• Late 2024 and early 2025: Political uncertainty and economic pressures contributed to foreign investors withdrawing from Korean markets.
• First quarter of 2025: GDP recorded a negative 0.8 percent change, while domestic investment weakened.
• April 2025: Construction contracted by more than 20 percent compared with the previous month.
• June 2025: Lee Jae-myung was elected president, and foreign investors returned as net buyers.

Yoon's impeachment and the subsequent leadership transition made the crisis a turning point for the presidency. The episode exposed the danger posed by a leader's decisions while also showing the capacity of parliament and the public to respond.

Why trust in Yoon's government had weakened

Yoon had been elected by the narrowest margin in Korean history. His administration then struggled to work with a National Assembly dominated by the opposition. An analysis of democratic strains identified entrenched sociopolitical polarization and leadership failures as two main forces behind the crisis.

Yoon frequently took a confrontational approach, vetoing bills and resisting investigations into alleged corruption involving his wife and close associates. These disputes made cooperation between the executive, which runs the government, and the legislature, which passes laws and scrutinizes the administration, increasingly difficult.

Public frustration also grew around the government's handling of the Itaewon Halloween tragedy and the suspicious death of Lance Corporal Chae Su-geun. Perceptions that the administration was undermining justice and transparency, alongside policy failures in healthcare and other sectors, further weakened trust.

Hyunjoon Park, director of the James Joo-Jin Kim Center for Korean Studies, described the frustration with the administration's conduct:

The Korean people have been frustrated by the Yoon administration, especially its continued lack of transparency and subverting of justice.

What the public response revealed about democracy

South Korea's response to martial law demonstrated the maturity and resilience of its democratic institutions. Citizens and lawmakers acted quickly enough to stop the declaration from becoming a prolonged exercise of extraordinary presidential power.

Soosun You, a senior fellow in political science, said the speed of the crisis showed why even an established democracy requires an alert public and institutions ready to act:

One of the key lessons is that democracy should not be taken for granted. Even in a consolidated democracy like South Korea, it didn't take several hours for this incident to unfold. Fortunately, citizens and lawmakers were able to take immediate action to prevent the country from further backsliding.

The response brought together people who might otherwise disagree over policy or party allegiance. Their shared defense of constitutional norms helped prevent a return to authoritarian rule at that moment.

The same episode left a demanding task for the political leadership. The institutions that stopped martial law still had to function amid the polarization and distrust that preceded it. Restoring ordinary cooperation between the presidency and parliament was part of the work facing the new administration.

Political conflict, populism and corruption

Choi Jin-seok, a professor emeritus, identified four factors that can push a country toward decline: extreme political conflict, social disintegration, populism and corruption. In a widely discussed article, he argued that South Korea was showing symptoms of all four.

The presidency and the opposition controlled National Assembly had repeatedly clashed over investigations, policy initiatives and the basic functioning of government. Political polarization had reached unprecedented levels, with confrontation becoming a recurring feature of relations between the two branches. This gridlock weakened effective governance and fed public cynicism.

Populism added another pressure. In this context, it involved rhetoric and policies designed to win immediate political support, often at the expense of national interests over a longer period. Parties on both the left and the right demonized opponents and prioritized political survival.

Corruption scandals involving figures across the political spectrum deepened disillusionment and weakened the legitimacy of democratic institutions. Choi also warned against manipulating the judiciary for political gain, a trend described as increasingly visible in recent years.

Attempts to influence court decisions or protect allies from prosecution threaten the rule of law and the separation of powers. These principles require public officials to operate under legal rules and keep the powers of government sufficiently separate for each institution to check the others.

Social divisions reach beyond parliament

South Korea's rapid modernization and economic success have not been matched by the same degree of social cohesion. Divisions along ideological, generational and regional lines have become defining features of public life.

Media and social networks provide arenas for ideological conflict. Disputes over gender equality, immigration and national identity have become flashpoints, while compromise is often seen as weakness. In that environment, reaching agreement becomes harder even when people share an interest in effective government.

Choi cautioned against using the language of justice and democracy to disguise political or personal vendettas. His argument separated justice from revenge and democracy from mob rule or authoritarian populism. The concern was that apparently principled language could become a tool for pursuing opponents rather than protecting fair rules.

Ordinary citizens also had a role in his assessment. Choi argued that apathy, complacency and uncritical support for partisan agendas had allowed destructive patterns to continue. A healthy democracy, in his view, depends on an engaged public willing to hold leaders accountable and demand better governance.

The rapid mobilization against martial law showed that such engagement existed. Sustaining it during ordinary political disputes, when the threat is less immediate and party loyalties are stronger, remained part of the challenge described by Choi.

Weak construction and investment weigh on growth

KDI's assessment placed construction, exports and employment at the center of the economic slowdown. A slump in construction reduced an important source of domestic demand, while slowing exports and limited job growth left the economy with fewer sources of momentum.

The negative 0.8 percent GDP change in the first quarter of 2025 coincided with faltering domestic investment and mounting external trade pressures. Investment matters because spending on buildings, equipment and production capacity supports activity today and the economy's ability to produce in the future.

Facility investment, especially in semiconductors, had previously been a bright spot. It also fell sharply in early 2025. That weakened a source of strength at the same time that construction was struggling.

April's construction contraction of more than 20 percent from the previous month illustrated the depth of the immediate weakness in that sector. Construction supports domestic demand through spending on projects, materials and labor, so a sharp decline affects activity beyond individual building sites.

Consumer sentiment showed signs of recovery, offering some encouragement. The economic outlook remained cautious because improved confidence was occurring alongside weak investment, trade pressures and the construction slump.

Why the slowdown extends beyond one quarter

An analysis of growth pressures described South Korea's slowdown as more structural than cyclical. A cyclical slowdown is linked to the normal rise and fall of economic activity. A structural slowdown reflects deeper constraints on how much an economy can grow over time.

South Korea faces declining growth potential because its population is aging and its workforce is shrinking. Those changes affect the number of people available to work and the economy's capacity to expand. They are pressures that persist beyond a single weak quarter.

Heavy dependence on exports, particularly to the United States and China, creates another vulnerability. When conditions in major overseas markets become less favorable, Korean businesses have fewer opportunities to sell abroad, and the effects reach domestic investment and employment.

Recent increases in US tariffs under the Trump administration further dampened export prospects. Tariffs are taxes on imported goods, which can make products from abroad more expensive in the market imposing them. Domestic political instability had also discouraged investment, adding a local source of uncertainty to international trade pressures.

The combination helps explain why better consumer sentiment or a stock market rally could coexist with a cautious economic outlook. South Korea was dealing with immediate weakness in demand and investment while also facing slower growth potential over a longer period.

Foreign investors return after the election

Foreign investors withdrew from Korean markets in late 2024 and early 2025 as political uncertainty and economic headwinds intensified. Their departure added to the decline in the KOSPI and weakened the won.

The resolution of the political crisis and Lee's election in June helped restore confidence. Foreign investors became net buyers, meaning their purchases exceeded their sales. This return pushed the KOSPI to its highest level in nearly a year and helped strengthen the currency.

Lee Kyung-min, an analyst at Daishin Securities, linked the renewed demand to expectations about government spending, interest rates and the exchange rate:

Foreign investor demand has strengthened due to expectations of fiscal stimulus alongside interest rate cuts and factors favoring the won's appreciation. Since the exchange rate could decline further, the trend of net buying by foreign investors is expected to continue.

Fiscal stimulus means government action, such as additional spending, intended to support economic activity. Interest rate cuts can reduce borrowing costs. Expectations of a stronger won can also make Korean investments more attractive to foreign buyers.

Global trade tensions, particularly those involving the United States, remained a risk to the recovery in market confidence. Renewed political instability could also reverse the gains. The return of investors was an encouraging development, while the durability of their demand remained uncertain.

Regional tensions add to domestic pressures

South Korea's domestic difficulties unfolded in a volatile regional environment involving China, Russia, North Korea and the United States. North Korean provocations, China's assertiveness and uncertainty over US security commitments all required careful navigation.

An assessment of regional pressures placed the instability alongside earlier periods when political brinkmanship and foreign interference threatened South Korea's stability. The country's political system has historically moved between authoritarianism and democracy under the influence of both external pressures and internal divisions.

The assessment also considered how Confucian traditions and the concept of the rightful ruler shape judgments about legitimate authority. In that understanding, a ruler's right to lead remains subject to public judgment, especially during a crisis.

South Korea depends on international trade and security alliances, so political turmoil at home can affect its wider relationships. Leaders must manage economic ties and security concerns while maintaining confidence in domestic institutions.

A return to authoritarianism was considered remote, though continued instability carried that risk. Renewed commitment to democratic norms and political moderation offered a way to withstand external shocks and preserve the country's global standing.

What Lee Jae-myung's administration aims to change

Lee's election in June marked a potential turning point after the political crisis. He pledged to revitalize the economy, pursue innovative growth sectors and strengthen social welfare programs.

His administration aimed to balance economic development with social equity and environmental sustainability. It also planned active engagement in regional diplomacy to address security challenges. These ambitions connected domestic recovery with the country's relationships abroad.

Lee's agenda reflected the need for internal reform and external engagement at the same time. Reconciliation, cooperation and growth that reaches more people were presented as ways to reverse the trends associated with decline and restore public confidence.

The challenges were concrete: a legislature and presidency accustomed to confrontation, a public divided over major social issues, weak construction and investment, an aging workforce and uncertain export markets. Economic reform and stronger welfare programs would have to be pursued amid those conditions.

South Korea's position on June 13 combined serious strains with demonstrated capacity for recovery. Citizens and lawmakers had defended constitutional government, and foreign investors had responded positively to the leadership transition. The choices of leaders and citizens would shape whether those gains developed into more effective government and a more resilient economy.

The Essentials

• Yoon Suk Yeol's martial law declaration in late 2024 was overturned by the National Assembly within six hours, exposing political vulnerabilities and demonstrating democratic resilience.
• Yoon's impeachment and Lee Jae-myung's election in June 2025 brought a leadership transition after months of uncertainty.
• Political confrontation, corruption concerns and ideological, generational and regional divisions weakened trust and cooperation.
• GDP recorded a negative 0.8 percent change in the first quarter of 2025. Construction contracted by more than 20 percent in April from the previous month.
• An aging population, a shrinking workforce, export dependence and US tariff increases weighed on growth prospects.
• Foreign investors returned as net buyers, helping the KOSPI reach its highest level in nearly a year and strengthening the won.
• Lee pledged economic renewal, innovative growth sectors, stronger social welfare and active regional diplomacy amid continuing trade and security pressures.