SEOUL, Mar 09 (AJP) - The Black Monday bombshell in South Korean capital markets has once again laid bare the vulnerabilities of the country’s external-reliant economy, now facing the dreaded triple highs of oil prices, the dollar and interest rates — a classic recipe for stagflation.
Crude prices touched above $110 per barrel for the first time since the early months of Russia’s invasion of Ukraine in 2022, marking one of the fastest climbs since the oil crises of the 1980s.
Futures on U.S. benchmark West Texas Intermediate (WTI) and Brent crude soared more than 25 percent Sunday and more than 50 percent since attacks on Iran began on Feb. 28.
Dubai crude — the benchmark most relevant for South Korea — closed Friday at $99.14. The jump marks the sharpest escalation in 31 months, since intraday prices briefly cleared $100 in mid-2022 following Russia’s invasion of Ukraine.
The sudden spike in the three major benchmarks — which had stabilized near $80 just a week earlier — was triggered by news that Mojtaba Khamenei, the second son of Iran’s late supreme leader Ali Khamenei, has officially succeeded his father.
Mojtaba, long seen as a shadow power broker who famously backed former President Mahmoud Ahmadinejad, is widely viewed as a hardliner whose ascension reinforces fears of a prolonged conflict and the potential shutdown of the Strait of Hormuz.
The conflict has already brought tanker traffic through the Strait of Hormuz to a near standstill. Roughly 20 million barrels of oil per day — about one-fifth of the world’s seaborne crude supply — normally passes through the narrow waterway linking the Persian Gulf to global markets.
Data from Vortexa shows that roughly 16 million barrels per day of oil have effectively been stranded behind the strait and cut off from global supply chains.
Retail fuel prices have quickly followed the surge.
As of Sunday, the average price of gasoline at filling stations in the Seoul metropolitan area reached 1,945.73 won ($1.35) per liter, while diesel climbed to 1,967.19 won — up 11 percent and 18 percent respectively since Feb. 28.
In a rare reversal, diesel prices have now surpassed gasoline for the first time since February 2023. Analysts attribute the inversion to rising marine fuel demand and surging maritime logistics costs as tanker traffic reroutes.
U.S. President Donald Trump attempted to calm markets by granting India a temporary waiver to import Russian oil and posting on social media that prices would drop “when the destruction of the Iranian nuclear threat is over.”
Market sentiment, however, remained rattled.
Asia’s energy exposure magnifies the shock
The rapid breach of the $100 psychological threshold reverberated across East Asian markets due to the region’s heavy dependence on Middle Eastern energy supplies.
In 2025, Asia absorbed 87 percent of the crude oil and 86 percent of liquefied natural gas (LNG) shipments passing through the Strait of Hormuz.
South Korea remains particularly exposed.
The country relies on the Middle East for 70.7 percent of its oil imports and 20.4 percent of LNG supplies, of which roughly 15 percent comes from Qatar.
Compounding concerns, Qatar’s main LNG export facility — which normally accounts for roughly 17 percent of global LNG flows — is currently offline after being struck by an Iranian drone.
On March 6, Qatar’s energy minister Saad al-Kaabi told the Financial Times that it could take “weeks to months” to restore normal operations even if the war were to end immediately.
Financial markets buckle
Foreign investors reacted swiftly to the deteriorating outlook, dumping more than 3.3 trillion won ($2.4 billion) worth of KOSPI shares on Monday.
The benchmark index plunged nearly 8 percent, while the Korean won weakened toward the 1,500-per-dollar level — its lowest point since the aftermath of the global financial crisis 17 years ago.
The panic quickly spilled into the bond market.
The three-year government bond yield jumped 25 basis points to 3.477 percent, while the 10-year yield rose 15.3 basis points to 3.769 percent — the biggest single-day increase in 41 months since the aftermath of the U.S. Federal Reserve’s aggressive tightening cycle in September 2022.
Verbal intervention from policymakers did little to calm investors.
President Lee Jae Myung ordered “extraordinary vigilance” from fiscal and monetary authorities, while Bank of Korea senior deputy governor Ryoo Sang-dai warned that the moves in interest rates and the exchange rate appeared “excessive.”
The central bank also announced an extension of its currency swap agreement with the Swiss National Bank.
Spillover into the real economy
The financial turbulence underscores how sensitive South Korea’s economy remains to oil price shocks.
A report released March 3 by the Hyundai Research Institute noted that while South Korea ranked as the world’s 12th-largest economy in 2024, it was the seventh-largest consumer of oil globally.
The combined shock of rising crude prices and a weakening won is expected to intensify inflationary pressure.
Hyundai Research Institute estimates that if international oil prices average $150 per barrel, consumer inflation could rise by 0.8 percentage points to 2.9 percent, while economic growth could slow by a similar margin from its current 2 percent forecast.
The Bank of Korea and government projections of roughly 2 percent growth were based on oil prices averaging around $62 per barrel.
Should growth slip below 2 percent — following an already weak 1 percent expansion in 2025 — economists warn the economy could drift toward stagflation as import-driven inflation collides with slowing output.
“As South Korea is a net energy importer, the upward trend in the current account surplus is likely to lose momentum as oil prices rise,” said Lee Min-hyuk, a researcher at KB Kookmin Bank.
Stock rally loses steam
The geopolitical shock has also punctured the optimism surrounding Korea’s stock market rally.
“Since the KOSPI had outperformed other markets, there is still room for profit-taking, and with a lack of positive catalysts further declines are possible,” said Cho Jun-ki, an analyst at SK Securities.
The benchmark index surged 76 percent in 2025 — nearly triple the gains of Japan’s Nikkei 225 or Taiwan’s TAIEX.
Even before Monday’s crash, the KOSPI had risen 14.9 percent in 2026, more than double the Nikkei’s roughly 7 percent gain.
Bond markets may also face sustained pressure.
“During the 2011 Libyan crisis, government bond yields rose by more than one percentage point between the start of the year and August,” said Kim Sung-soo, a researcher at Hanwha Investment & Securities.
Kim expects a similar trajectory this year, projecting a ceiling of around 3.5 percent for the three-year yield and 3.9 percent for the 10-year yield.
“A quick recovery is unlikely,” he said.
Oil outlook remains grim
Energy markets are bracing for further volatility.
Goldman Sachs warned in a Sunday report that crude prices could exceed $150 per barrel by the end of March, noting that the roughly 20 million barrels of oil transiting the Strait of Hormuz each day places the current crisis on a scale comparable to the oil shocks of the 1970s.
Daishin Securities reached a similar conclusion, saying oil could remain above $100 for an extended period if global strategic petroleum reserves begin to tighten.
South Korea currently holds strategic petroleum reserves equivalent to roughly 200 days of consumption, according to the Korea National Oil Corporation — the sixth-largest reserve among non-oil-producing countries.
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