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Oil Prices Surge as Iran Halts Talks and Threatens Strait of Hormuz

Oil Prices Surge as Iran Halts Talks and Threatens Strait of Hormuz
Business · 2026
Photo · Beatrice Romano for European Pulse
By Beatrice Romano Business & Markets Editor Jun 1, 2026 4 min read

Oil prices climbed sharply on Monday afternoon as Iran suspended all indirect talks with the United States and threatened to fully close the Strait of Hormuz, a critical chokepoint for global crude shipments. The move has intensified fears that the broader Middle East conflict could escalate rather than move toward a diplomatic resolution.

At the time of writing, US West Texas Intermediate (WTI) crude was up 7.69% at $94.08 per barrel, while Brent crude rose 6.43% to $97.07 per barrel. The Strait of Hormuz, through which about 20% of the world's oil passes, is a strategic waterway that Iran has previously threatened to block during periods of heightened tension.

Market Reactions Across the Atlantic and Asia

In the United States, the S&P 500 remained virtually unchanged from its all-time high set on Friday. The Dow Jones Industrial Average slipped 130 points, or 0.3%, while the Nasdaq composite was flat. Both indices are also coming off record levels, supported by a wave of better-than-expected corporate earnings reports.

Science Applications International Corp. jumped 12.3% after reporting higher-than-expected quarterly profits and raising its forecasts following several new contracts from the US Department of Homeland Security, the army, and other agencies. Such profit reports have helped US stocks push to records even as the conflict with Iran drives up oil prices and inflation by slowing crude deliveries from the Persian Gulf.

In Asia-Pacific markets, performance was mixed overnight. South Korea’s Kospi climbed 1.31%, while Japan’s Nikkei 225 edged up 0.17%. The broader Topix index, however, slipped 0.3%. Australia’s S&P/ASX 200 fell 0.21%, and Hong Kong’s Hang Seng Index gained 0.73%. Mainland China’s CSI 300 dipped 0.32%.

Tokyo-listed shares in SoftBank Group surged 5% after the Japanese conglomerate announced plans to invest €45 billion over the next five years to develop artificial intelligence infrastructure in France. This investment underscores the growing importance of AI and digital infrastructure in Europe, even as energy markets face turbulence.

European Energy Implications

For European consumers and businesses, the rise in oil prices is a reminder of the continent's vulnerability to global energy shocks. While Europe has made strides in renewable energy, the region still relies heavily on imported oil and gas. The threat to the Strait of Hormuz could push fuel prices higher, affecting everything from transport costs to heating bills.

Some European countries have already taken steps to mitigate such risks. For instance, a German village managed to cut energy costs to 12 cents per kilowatt-hour, demonstrating how local renewable projects can insulate communities from global price spikes. However, broader efforts to reduce dependence on fossil fuels remain uneven across the continent.

The European Union has also been exploring alternative energy sources and trade routes to reduce reliance on the Persian Gulf. Yet, as the current crisis shows, the transition away from oil is still a work in progress. The bloc's energy ministers are expected to discuss contingency plans in the coming days, though no formal meetings have been announced.

Meanwhile, the oil price rally comes amid broader geopolitical tensions. The suspension of US-Iran talks follows a series of escalations, including Israel's expanded military operations in Lebanon. These developments have raised the stakes for European diplomats, who have traditionally played a mediating role in the region. The EU's foreign policy chief, Josep Borrell, has called for restraint, but the prospects for a ceasefire remain uncertain.

For now, markets are bracing for further volatility. Analysts warn that if Iran follows through on its threat to close the Strait of Hormuz, oil prices could spike even higher, with potential ripple effects across the global economy. European consumers, already grappling with high inflation, may face additional pressure at the pump and in their heating bills.

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