What Happened

Between May 7 and 8, 2026 (local time), a military conflict occurred between the United States and Iran in the Strait of Hormuz. According to reports from CNBC and Maeil Business Newspaper, the U.S. military stated that it struck Iranian missile and drone bases and other facilities in self-defense. Iranian media reported that explosions were heard in the southern Iranian regions of Bandar Abbas and Minab, and that they shot down two U.S. drones and repelled U.S. forces. This conflict threatens the safety of oil tankers and merchant vessels passing through the Strait of Hormuz, a critical conduit for global crude oil shipments. Tensions are escalating, with the HMM-operated cargo ship 'Namoo,' which had previously caught fire, arriving in Dubai, UAE, to begin investigations into the cause of the incident. In particular, the CEO of Shell warned that the international oil market is facing a deficit of approximately 1 billion barrels due to the Iran conflict, and this gap is deepening daily, indicating severe supply instability in the energy market.

Why It Matters

The Strait of Hormuz is a critical passage accounting for approximately 20% of global seaborne crude oil shipments and a lifeline for global energy security. Military conflict here poses a direct threat to the global energy supply chain, leading to upward pressure on oil prices and potentially fueling global inflation. The Shell CEO's remarks are spreading the perception that the current supply shortage facing the market is not temporary but structural and severe, suggesting that oil price increases could persist without a diplomatic resolution between the U.S. and Iran. This comes amid escalating tensions in the Middle East following the Trump administration's declaration of 'Project Freedom,' acting as a factor that maximizes international geopolitical uncertainty and increases downside pressure on global economic growth.

Impact on the Korean Market

Escalating tensions in the Strait of Hormuz directly impact the South Korean economy, which imports most of its crude oil from the Middle East. A blockade of the strait or disruptions to transportation would lead to surging oil prices and increased logistics costs, exacerbating domestic inflationary pressures. This could further push back expectations for interest rate cuts by the Bank of Korea and deepen cost burdens for businesses, potentially leading to an overall economic slowdown. The refining and petrochemical industries are particularly sensitive to oil price volatility. While the shipping industry might see opportunities for freight rate increases, uncertainty could also grow due to increased risks in vessel operations and higher insurance premiums. High oil prices could also deepen the burden of power generation costs for state-owned energy companies like Korea Electric Power Corporation (KEPCO), leading to pressure for electricity tariff hikes.

Key Stock Analysis

  • WTI Crude Oil (WTI): As geopolitical risks in the Middle East escalate, concerns over crude oil supply disruptions will intensify, exerting strong upward pressure on oil prices. Instability in the Strait of Hormuz is a key variable in the global crude oil market. (sentiment: positive)
  • Brent Crude Oil (BRENT): Similar to WTI, geopolitical tensions in the Middle East will be a major factor driving up Brent crude oil prices. Increased supply uncertainty will fuel price increases. (sentiment: positive)
  • S-Oil (010950): Rising oil prices can act as a factor increasing inventory valuation gains for refiners. However, there is also uncertainty regarding increased crude oil purchasing costs and fluctuations in refining margins. In the short term, a positive impact from inventory effects is anticipated. (sentiment: positive)
  • SK Innovation (096770): Similar to S-Oil, an increase in inventory valuation gains due to rising oil prices can be expected. However, for the petrochemical segment, there is a possibility of deteriorating profitability due to increased cost burdens, so a mixed impact is anticipated. (sentiment: neutral)
  • HMM (011200): Tensions in the Strait of Hormuz can increase the risks of maritime transport and raise insurance premiums. While freight rate increases can be expected in the short term, in the long term, there are concerns about increased costs due to transport delays and route changes, as well as reduced efficiency. (sentiment: neutral)
  • Korea Electric Power Corporation (015760): Rising oil prices exacerbate the cost burden for KEPCO, which has a high proportion of fuel costs in its power generation expenses. This could lead to pressure for electricity tariff hikes, or, if tariff increases are restricted, to a deterioration in performance. (sentiment: negative)
  • Gold (GOLD): As geopolitical uncertainty increases, safe-haven asset preference strengthens, making it highly likely for gold prices to rise. Tensions in the Middle East are a classic factor stimulating gold demand. (sentiment: positive)
  • Bitcoin (BTC): Geopolitical instability could attract some demand for Bitcoin, perceived as 'digital gold' alongside traditional safe-haven assets. However, if overall risk aversion in global financial markets intensifies, it could also lead to a concurrent decline. (sentiment: neutral)

Future Scenarios

Optimistic Scenario: If diplomatic dialogue channels between the U.S. and Iran are reopened and tensions in the Strait of Hormuz ease, oil prices could stabilize. If the Trump administration focuses on Middle East peace negotiations or OPEC+ agrees to increase production, supply instability could be resolved. In this case, domestic inflationary pressures would also ease, providing more flexibility for the Bank of Korea's monetary policy operations. Furthermore, the shipping industry could experience an optimal situation, continuing to benefit from rising freight rates while reducing risk burdens.

Pessimistic Scenario: If military conflict prolongs or extreme situations such as a blockade of the Strait of Hormuz occur, oil prices could surge past $100 per barrel. This would deepen concerns about a global recession and stagflation, severely impacting the South Korean economy. In particular, it could lead to a weakening of competitiveness across domestic industries highly dependent on energy. Investors should closely monitor crude oil inventory indicators, the possibility of further military actions in the Middle East, and diplomatic movements between the U.S. and Iran. It is also crucial to examine whether insurance premiums for oil tanker operations increase and how major maritime transport companies plan to respond.