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Oil rises as Trump threatens sanctions on Iran partners - Finance news and analysis from Global Banking & Finance Review
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Oil rises as Trump threatens sanctions on Iran partners

Published by Global Banking & Finance Review

Posted on August 21, 2026

3 min read

· Last updated: August 21, 2026

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Crude Oil Prices Surge Amid Trump’s Sanctions Threat Against Iran Partners

Oil Markets React to U.S. Sanctions and Geopolitical Tensions

By Erwin Seba

Crude Oil Futures Rise on Sanctions Threat

HOUSTON, Aug 21 (Reuters) - International and U.S. crude oil futures rose on Friday after U.S. President Donald Trump threatened economic sanctions on Iran's trading partners, raising expectations of tighter supply in the coming weeks.

International benchmark Brent crude futures settled at $94.39 a barrel, up 61 cents or 0.65%. U.S. West Texas Intermediate crude settled at $87.06 a barrel, up 23 cents or 0.26%. 

The Brent benchmark has gained 6.39% while WTI has risen 5.66% this week, with both touching their highest since July 24 in the previous session.

Expert Commentary on Sanctions Impact

"Sanctions have been the only thing to bring Iran to heel," said John Kilduff, partner with Again Capital. 

Iran’s Response and Market Implications

Iran said on Friday that its response to any new U.S. threats would be "devastating" after Washington pledged to impose the toughest financial penalties in history with the aim of toppling the Iranian leadership.

Analyst Perspectives on Supply Constraints

"The immediate impact on supply may be limited as Iranian exports are already heavily constrained by the U.S. naval blockade," said Crispus Nyaga, research analyst at Empire FX.

"However, an increase in shipping incidents and retaliation against economic sanctions could exacerbate the current situation at a time when traffic through the Strait of Hormuz remains well below normal levels."

Alternative Supply Routes and Market Adaptation

But, workarounds and alternative supplies are being found while Hormuz remains constrained, said Phil Flynn, senior analyst with Price Futures Group. 

"Hormuz is still a problem, but it is no longer the only story," Flynn said in a morning note. "Pipelines, shuttles, U.S. shale, a recovering (if bottlenecked) Venezuela, and an unconstrained UAE are all adding barrels."

Broader Supply Concerns and Geopolitical Developments

Oil prices have climbed on concerns over the continued curtailment of supply from major oil producers such as Saudi Arabia, Iraq, the United Arab Emirates and Kuwait. 

The earlier peace deal between the U.S. and Iran expired this week with no effort by either side to restart talks.

  Offers of Iranian crude to Chinese buyers have declined and prices have jumped this week as the U.S. blockade cuts Iran's shipments, trade sources said, with the threat of more sanctions from Washington looming.

Supply Disruption Continues

SUPPLY DISRUPTION CONTINUES

Seven commodity ships sailed along the Strait of Hormuz on Thursday, which was only half the previous day's tally, data from ship-tracker Kpler showed.

Before the U.S.-Israeli attacks on Iran began in late February, the Strait of Hormuz handled about a fifth of global oil and liquefied natural gas supplies. As the war approaches the six-month mark, disruptions to energy flows through the waterway remain in place.

Other Global Energy Events

Elsewhere, Ukraine's military hit a Russian oil refinery in the city of Perm overnight, more than 1,600 km (1,000 miles) from the Ukrainian border, President Volodymyr Zelenskiy said on Friday.

(Reporting by Erwin Seba in Houston, Anushree Mukherjee in Bengaluru, Enes Tunagur in London and Sudarshan Varadhan in Singapore; Editing by David Goodman, Sanjeev Miglani and Cynthia Osterman)

Key Takeaways

  • Brent crude settled near $94.39/barrel and WTI at $87.06, both benchmarks up approximately 6%–6.4% for the week as supply fears mounted.
  • Shipping through the Strait of Hormuz remains severely limited—only seven commodity vessels transited on August 20, roughly half the prior day—underscoring ongoing supply disruptions.
  • The U.S. is intensifying economic pressure on Iran by targeting its international trading partners, threatening to amplify strains on global oil flows.

References

Frequently Asked Questions

Why did oil prices rise after Trump's threat of sanctions on Iran's partners?
Oil prices increased due to concerns that new U.S. sanctions could further tighten crude supply from Iran, which is already constrained, raising global scarcity fears.
What impact have U.S. sanctions had on Iranian oil exports?
U.S. sanctions and naval blockades have significantly reduced Iran's export capacity, causing Iranian crude offers and shipments—especially to China—to drop.
How is the Strait of Hormuz affecting global oil supply?
Disruptions in the Strait of Hormuz have led to reduced shipping traffic and tightened global oil and liquefied natural gas supplies, fueling market volatility.
Are alternative oil supplies helping to offset the disruptions?
Yes, increased production from the U.S., Venezuela, and the UAE, as well as new pipeline routes, are helping to supplement restricted supplies from the Persian Gulf.

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