South Korea

What does the map enable, and what does it threaten?

South Korea's map is its hardest inheritance. It occupies the southern half of a divided peninsula, with a nuclear-armed North Korea across the border and China and Japan as close neighbours. It has few natural resources and must import almost all its energy. Its strengths are a long coast and ports that make it a natural trading nation, and it has built one of the world's great export economies on that base³. A dangerous, resource-poor position that it has turned to advantage through trade.

Is the population growing, skilled and staying?

South Korea's people are highly educated and productive, but there are too few children. The total fertility rate stood at 0.8 in 2025, up from 0.75 in 2024 and a record low of 0.72 in 2023⁴. Births rose 6.7% to 254,300 in 2025, the second annual rise⁹. The median age is about 46². The labour market is tight, with unemployment at 2.6% in September 2026⁸. The fall in births has stopped for now, but the workforce will shrink for decades.

What habits does the society reward?

South Korea's habits of hard work, saving and intense investment in education built its prosperity. Public integrity is good but not top-tier: it scored 63 on Transparency International's 2025 index, down one point, ranking 31st of 182 countries¹⁰. The same intensity that drives achievement also weighs on family life, which helps explain fertility at 0.8⁴. Comparable data on trust over time is thin, hence medium confidence. This score is about institutions and social habits, not about any group.

Who rules, how are they chosen, and are they competent?

President Lee Jae-myung, elected in June 2025 after Yoon's removal, has steadied the country but faces hard choices. His government agreed a trade deal with Washington that set a 15% US tariff on Korean goods in return for US$350 billion of investment in the United States¹¹, and the National Assembly passed a bill to carry out part of it¹². Growth is recovering, with the IMF forecasting 3.3% in 2026 after 1.1% in 2025³, and the jobless rate is at a two-year low⁸. Steady management, with the costs of the US deal still to be paid.

Is there rule of law, low corruption and predictability?

South Korea's institutions proved stronger than its president. When Yoon Suk Yeol declared martial law in December 2024, parliament overturned it; in February 2026 the Seoul Central District Court sentenced him to life in prison, ruling that mobilising forces to seize the National Assembly and detain political leaders amounted to insurrection⁵. His lawyers called the ruling a mere formality for a predetermined conclusion⁵. Corruption is moderate, with a score of 63 and a rank of 31st of 182¹⁰. Strong rule of law, tested and holding.

Where are the fault lines, and how stable are they?

South Korea is ethnically and culturally cohesive but politically polarised. The martial-law crisis and its aftermath split the country: the court found Yoon guilty of insurrection, while his lawyers called it a formality for a predetermined conclusion⁵. The young also face a hard labour market, with the employment rate for those aged 15 to 29 down 1.1 points from a year earlier, at 44%¹³. Reliable survey data on trust was not gathered for this assessment, hence low confidence. United in identity, divided in politics.

Why does the world need this country?

South Korea matters to the world economy as a leader in semiconductors, shipbuilding, cars and batteries. The IMF puts its 2026 GDP at about US$2.2 trillion³. Its pledge of US$350 billion of investment in the United States, part of its 2025 trade deal, shows its weight as a source of capital and industry¹¹. Its AA ratings make it a safe home for capital⁶. What holds the score down is that its security still depends on the United States.

What does it need, want and fear?

Need: deterrence against North Korea, backed by the US alliance; open markets for its exports, including the United States under a 15% tariff¹¹; and a recovery in births⁴. Want: a stable relationship with China, its neighbour and a major market; manageable terms for its US investment pledge¹²; and continued growth after a weak 2025³. Fear: a North Korean attack or nuclear crisis; a US tariff increase or reduced commitment; and a workforce that shrinks faster than productivity can rise⁴.

Who are its patrons, rivals and hedges?

South Korea relies on its alliance with the United States for security, while trading heavily with China. The alliance now carries a clearer price: a 15% tariff on its goods and a US$350 billion investment pledge¹¹, and Seoul had to pass a law to carry out its investment pledge¹². North Korea remains its main military threat. Detailed, sourced data on its relations with China and Japan was not gathered for this assessment, hence low confidence. Secure under the US umbrella, at rising cost.

Can it deter, or does it depend on others?

South Korea is one of Asia's strongest military powers. SIPRI puts its military spending at 2.60% of GDP in 2025, a level it has kept for years⁷. Its forces are large, modern and backed by a major domestic arms industry. It has no nuclear weapons of its own and depends on US extended deterrence against a nuclear-armed North. Readiness data is limited, hence medium confidence. Strong, but not self-sufficient.

Rising, stagnant or declining, and how fast?

Judged by results, South Korea is recovering from a weak 2025. The IMF records growth of 2.2% in 2024 and 1.1% in 2025, and forecasts 3.3% for 2026³. Unemployment fell to 2.6% in September 2026, the lowest in two years⁸. Births rose for a second year in 2025⁹. Government debt is moderate at about 47% of GDP in 2026³. Improving, from a low point.