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Oil slips again as US, Iran sign peace deal - Finance news and analysis from Global Banking & Finance Review
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Oil slips again as US, Iran sign peace deal

Published by Global Banking & Finance Review

Posted on June 18, 2026

4 min read

· Last updated: June 19, 2026

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Brent rises after Vance warns Israel against breaking ceasefire

Oil Market Reactions and Geopolitical Developments

(Corrects to say Brent hit lowest since March 2, not February 27, in first bullet and paragraph 4)

By Erwin Seba

Brent and WTI Price Movements

HOUSTON, June 18 (Reuters) - Brent crude oil prices rose on Thursday after U.S. Vice President JD Vance warned Israel against further attacks on Iran-backed Hezbollah in Lebanon, raising doubts about the durability of the U.S.-Iran ceasefire agreement.

"The vice president's statements about Israel may have put things back on edge," said John Kilduff, partner with Again Capital. "I think the slightest sort of disturbance is going to register in the market."

Brent crude futures settled at $79.85 a barrel, up 30 cents, or 0.38%. U.S. West Texas Intermediate fell 19 cents or 0.25% to finish at $76.60 a barrel. 

Before Vance's comments, Brent touched its lowest level since March 2, which was the first day of trading after the initial U.S.-Israeli strikes on Iran. WTI was at its lowest since March 4.

Strait of Hormuz and Ceasefire Agreement

Ultimately, oil markets will be focused on what happens in the Strait of Hormuz, through which 20% of the world's oil flowed before the start of the war.

Impact of the Ceasefire on Oil Flows

"Full resumption of oil flows through the strait has been priced back in," Kilduff said. "Anything short of that will be a  problem."

The 14-point memorandum of understanding between the United States and Iran establishes a 60-day negotiation period during which Iran will allow toll-free passage through the Strait of Hormuz. The deal calls for traffic through the strait to be restored to its full capacity within 30 days.

Regional Implications

The agreement is also binding on the two countries' allies in the Middle East and applies specifically to Lebanon, where Israel has been waging an air and ground campaign against Hezbollah.

The preliminary accord defers many of the more difficult issues, such as Iran's nuclear program, and also requires the United States and its partners to come up with a $300-billion plan to finance Iran's recovery.

Market Outlook and Analyst Expectations

Gradual Recovery and Price Projections

Analysts expect a gradual recovery in flows through the Strait of Hormuz, while industry experts have cautioned that prices may not plummet as demand recovers and inventories are refilled. 

Investment Bank Forecasts

Investment bank Goldman Sachs expects Gulf exports to normalize to pre-war levels by end-July, with crude production recovering by October.

The bank estimates that a normalization in exports to pre-war levels might be achieved with a 13 million barrel-per-day increase in Hormuz flows from current levels to around 70% of pre-war levels.

BNP Paribas does not currently anticipate a return to pre-war prices and views $75 per barrel as a "durable floor for the foreseeable future," it said in a note, given ongoing supply losses and higher demand. Brent traded around $60 to $70 per barrel in the first two months of the year before the war.

Global Demand and Other Market Factors

China, the world's second-largest oil consumer, is forecast to consume 753 million metric tons in 2026, down 4.9% from 2025 amid a pivot to new energy and high oil prices, according to a report published by PetroChina's research unit.

Ukrainian drones hit the Russian capital's oil refinery for the second time this week in what Ukraine cast as a demonstration of its growing capabilities.

Reporting Credits

(Reporting by Erwin Seba in Houston, Robert Harvey in London, Anushree Mukherjee in Bengaluru, Colleen Howe in Beijing and Siyi Liu in Singapore; Editing by Sonali Paul, Jan Harvey, Will Dunham, Mark Potter and Sanjeev Miglani)

Key Takeaways

  • The interim U.S.–Iran memorandum of understanding ends their war, waives oil sanctions temporarily, and opens the Strait of Hormuz, prompting a sharp drop in global crude benchmarks. (axios.com)
  • Brent crude declined by $0.89 (1.12%) to $78.66/bbl and WTI by $0.98 (1.28%) to $75.81/bbl, as markets priced in a swift return of Iranian supply. (investing.com)
  • The deal launches a 60‑day negotiation period to resolve issues like Iran’s nuclear program and envisions a $300 billion reconstruction fund; the IEA warned this could tilt the 2027 market from deficit to a surplus of over 5 million bpd. (investing.com)
  • Simultaneously, the Federal Reserve held rates steady at 3.50–3.75% but projected that roughly half of FOMC members now foresee at least one rate hike later this year, signaling rising inflation risks. (axios.com)

References

Frequently Asked Questions

Why did oil prices fall after the US-Iran peace deal?
Oil prices dropped because the agreement allows Iranian oil back to the market, easing supply disruptions and potentially creating a surplus.
What does the US-Iran deal include regarding the Strait of Hormuz?
The deal restores toll-free passage through the Strait of Hormuz, with full capacity expected within 30 days.
How could the peace deal affect global oil supply in 2027?
If the deal is fully implemented, the supply crisis could turn into a surplus, with supply outpacing demand by over 5 million barrels per day.
What are the economic risks highlighted by the US Federal Reserve?
The Federal Reserve is considering raising interest rates to control inflation, which could slow global economic growth and reduce oil demand.
What financial requirement does the deal place on the US and partners?
The preliminary accord requires a $300 billion plan to finance Iran's post-war recovery.

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