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Oil rebounds on uncertainty over Iran peace deal and inventory drawdowns

Published by Global Banking & Finance Review

Posted on May 21, 2026

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· Last updated: May 21, 2026

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Oil Prices Climb on Iran Peace Deal Uncertainty and Inventory Drawdowns

Market Reactions and Supply Concerns Amid Iran Conflict

By Sam Li and Lewis Jackson

Oil Price Movements and Recent Trends

BEIJING, May 21 (Reuters) - Oil prices rebounded on Thursday after two days of losses on outstanding supply concerns because of the uncertain outlook for an end to the Iran war and a U.S. inventory draw raised worries about the depletion of global stockpiles. 

Brent crude futures rose 81 cents, or 0.77%, to $105.83 a barrel by 0055 GMT, and U.S. West Texas Intermediate futures were up 97 cents, or 0.99%, at $99.23.

Impact of Negotiations and Geopolitical Tensions

Both benchmarks dropped more than 5.6% on Wednesday after U.S. President Donald Trump said negotiations with Iran were in the final stages, but he also threatened further attacks if it did not agree to a peace deal.

Iran warned against further attacks and announced steps entrenching its control of the crucial Strait of Hormuz waterway, which before the war carried oil and liquefied natural gas shipments equal to about 20% of global consumption but has been mostly closed.

Analyst Perspectives on Oil Price Volatility

"The sharp drop in oil prices appears to be pricing in the possibility of a breakthrough in the talks," said Yang An, analyst at Haitong Futures. 

"However, if Trump insists on making no concessions to Iran, an agreement seems unlikely, and the final outcome of the negotiations could reverse sharply," Yang said.

Strait of Hormuz Developments and Global Oil Supply

On Wednesday, Iran announced a new "Persian Gulf Strait Authority," saying there would be a "controlled maritime zone" in the Strait of Hormuz.

Iran effectively closed the strait in retaliation to U.S. and Israel attacks that started the war on February 28. Most of the fighting has stopped since an April ceasefire but while Iran is limiting traffic through Hormuz, the U.S. has blockaded its coastline. 

Inventory Drawdowns and Market Implications

The supply losses from the key Middle Eastern region because of the war have forced countries to pull from their commercial and strategic inventories at a rapid rate, raising concerns about draining them.    

The U.S. Energy Information Administration said on Wednesday the country withdrew nearly 10 million barrels of oil from its Strategic Petroleum Reserve last week, the biggest drawdown on record. 

The EIA also said commercial crude inventories fell by 7.9 million barrels to 445 million barrels last week, compared with analysts' expectations in a Reuters poll for a 2.9 million-barrel draw.

Gasoline inventories fell by 1.5 million barrels, while distillates rose by 372,000 barrels.

Expert Commentary on Future Oil Price Trends

"The drawdown in oil inventories will make it difficult for oil prices to remain low," said Mingyu Gao, chief researcher for energy and chemicals at China Futures.

"With the Strait of Hormuz blocked, global refined-product and onshore crude inventories are expected to fall below their lowest levels for this time of year in the past five years by late May and late June," Gao said.

(Reporting by Sam Li and Lewis Jackson; Editing by Christian Schmollinger)

Key Takeaways

  • Brent crude rose 81¢ (0.77%) to $105.83 and WTI gained 97¢ (0.99%) to $99.23 as markets grappled with uncertain Iran peace prospects and shrinking inventories.
  • U.S. strategic reserves fell by a record 9.9 million barrels; commercial crude stocks dropped nearly 7.9 million barrels, intensifying concerns over global supply tightness (boereport.com).
  • Iran’s creation of the Persian Gulf Strait Authority signals tighter control and monetization of the Strait of Hormuz transit—formerly handling ~20% of global seaborne oil—adding to geopolitical risk (euronews.com).

References

Frequently Asked Questions

Why did oil prices rebound after recent losses?
Oil prices rebounded due to ongoing supply concerns, uncertainty over the Iran peace deal, and significant drawdowns in oil inventories.
How did the Iran conflict affect oil supplies?
The Iran conflict led to blockades and closure of the Strait of Hormuz, disrupting shipments and forcing countries to use their oil reserves.
What impact did U.S. inventory drawdowns have on the oil market?
A record withdrawal from U.S. Strategic Petroleum Reserve and commercial inventories signaled tighter supply, supporting higher oil prices.
What is the significance of the Strait of Hormuz in global oil trade?
The Strait of Hormuz previously carried around 20% of global oil and LNG shipments, making its closure critical for worldwide energy markets.
What are the expectations if negotiations between the U.S. and Iran fail?
If no agreement is reached, ongoing tensions may further constrain oil supply, possibly causing oil prices to rise sharply.

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