Brent crude jumps 4%, as US strikes in Iran set back hopes for Hormuz re-opening - Finance news and analysis from Global Banking & Finance Review
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Brent crude jumps 4%, as US strikes in Iran set back hopes for Hormuz re-opening

Published by Global Banking & Finance Review

Posted on May 26, 2026

4 min read

· Last updated: May 26, 2026

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Brent Crude Soars 4% After US Strikes in Iran Delay Strait of Hormuz Reopening

Market Reactions and Geopolitical Developments

By Scott DiSavino

Oil Price Movements Following US Strikes

NEW YORK, May 26 (Reuters) - Brent crude futures climbed about 4% on Tuesday after the U.S. military carried out strikes in Iran, a setback to hopes over the weekend that the United States and Iran would reach an agreement to end the three-month war that would also re-open shipping through the crucial Strait of Hormuz.

U.S. futures were down, however, catching up to Monday's selloff in Brent, when U.S. markets were closed.

Global benchmark Brent rose $3.44, or 3.6%, to settle at $99.58 a barrel, while U.S. West Texas Intermediate (WTI) crude fell $2.71, or 2.8%, to settle at $93.89.

Recent Lows and Market Closures

On Monday, Brent closed at its lowest since April 20, losing 7% on renewed hopes for an agreement between the U.S. and Iran. U.S. crude was down by contrast as that market was closed Monday due to the U.S. Memorial Day holiday.

WTI closed at its lowest since April 22 on Tuesday, while U.S. gasoline futures fell 7% and U.S. diesel dropped 4% to their lowest closes in five weeks.

Diplomatic Efforts and Ceasefire Violations

U.S. officials have on several occasions said they were close to a deal with Iran to end the conflict, but have not reached an agreement beyond a temporary cease-fire that has reduced attacks to a minimum. 

On Tuesday, Iran said the U.S. had violated a ceasefire after it conducted what it called defensive strikes in southern Iran, while U.S. Secretary of State Marco Rubio said negotiating a deal to halt the conflict could "take a few days."

Statements from Iran and the United States

Iran's foreign ministry said U.S. strikes in Iran's southern Hormozgan province, where Iranian media reported sounds of explosions early on Tuesday, represented a "gross violation" of a tenuous ceasefire in place for nearly seven weeks.

Both sides had previously indicated progress on a memorandum of understanding that could halt the war and restart shipping through the blockaded Strait of Hormuz, while giving negotiators 60 days to negotiate more complex issues, including Iran's nuclear program.

Market Analyst Perspectives

"We are still waiting for more details on a potential deal," said Giovanni Staunovo at UBS. "Meanwhile we see renewed tensions in the Middle East, while flows through the Strait remain restricted."

The U.S. strikes happened as Iran's top negotiator and its foreign minister were in Doha for talks with Qatar's prime minister aimed at reaching an agreement. 

Impact on Shipping and Global Energy Flows

Strait of Hormuz Shipping Disruptions

TANKERS TRACKED PASSING THROUGH STRAIT  

Iran has effectively halted nearly all non-Iranian shipping in and out of the Strait of Hormuz since the war began in late February, choking off about one-fifth of global oil and liquefied natural gas (LNG) flows.

However, ship-tracking data showed three LNG tankers passed through the Strait in recent days, bound for Pakistan, China and India, along with a supertanker carrying Iraqi crude to China that had been stranded for nearly three months. 

Recent Incidents and Regional Responses

United Kingdom Maritime Trade Operations, however, said on Tuesday that a tanker had reported an external explosion on the vessel's port side, close to the waterline, 60 nautical miles off Oman's capital, Muscat.

Pakistan plans to boost domestic storage for crude oil and refined products to increase its energy security, according to a government document shared with oil producers and some of the world's leading trading firms.

Broader Economic Implications

Consumer Confidence and Inflation Concerns

U.S. consumer confidence slipped in May as worries about rising inflation linked to the war intensified and households' views of the labor market remained pessimistic.

Inflation increases the cost of goods for consumers, and the increase in prices has central banks, like the U.S. Federal Reserve, worried they will have to tighten monetary policy, which would likely increase consumer borrowing costs and reduce economic growth.

(Reporting by Scott DiSavino in New York and Alex Lawler and Robert Harvey in London; Additional reporting by Pooja Menon and Emily Chow in Singapore; Editing by David Holmes and Emelia Sithole-Matarise)

Key Takeaways

  • U.S. strikes in southern Iran—described as defensive—derailed hopes for a swift peaceful resolution and re‑opening of the crucial Strait of Hormuz, boosting Brent prices around 4% (apnews.com)
  • The Strait of Hormuz blockade has choked off roughly 20% of global oil and LNG shipments since late February, keeping supply tight and markets risk‑sensitive (au.investing.com)
  • Even if a ceasefire holds, normalization of flows may take weeks or months—declaring the strait 'open' doesn't guarantee immediate resumption of large‑scale shipping (axios.com)

References

Frequently Asked Questions

Why did Brent crude prices surge on Tuesday?
Brent crude prices jumped about 4% after the US conducted strikes in Iran, raising tensions and delaying hopes for re-opening the Strait of Hormuz.
How did US and Brent crude futures differ after the strikes?
Brent crude rose 3.6% while US WTI crude fell 2.8%, as American markets caught up with earlier declines during the Memorial Day holiday closure.
What is the significance of the Strait of Hormuz in global oil trade?
The Strait of Hormuz is a crucial chokepoint for oil and LNG shipments, accounting for about one-fifth of global flows, and disruptions impact global markets.
How have the US-Iran negotiations affected oil markets?
Previous hopes for a US-Iran agreement led to lower prices, but renewed conflict and US strikes have reversed optimism, causing price surges and shipping restrictions.
What broader economic impacts are linked to the oil price surge?
Rising oil prices have intensified inflation worries, reduced consumer confidence, and heightened concerns about global economic growth and central bank policies.

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