Crude Oil Prices Fall as US-Iran Peace Deal Eases Supply Concerns | June 18, 2026

Crude oil prices extended their decline in early trading on Thursday, June 18, 2026, after the United States and Iran signed an interim peace agreement aimed at ending the recent conflict and restoring normal energy trade flows, as per the Reuters news report. The development eased concerns over global supply disruptions and weighed on oil prices. 

Brent crude futures fell 89 cents, or 1.12%, to US$78.66 per barrel, while US West Texas Intermediate (WTI) crude declined 98 cents, or 1.28%, to US$75.81 per barrel. The losses followed renewed optimism that Iranian oil exports could return to global markets sooner than expected. 

US-Iran Agreement Eases Crude Oil Prices 

The decline in crude oil prices comes after the United States and Iran signed a 14-point memorandum that initiates a 60-day negotiation period. Under the agreement, Iran will permit toll-free passage through the Strait of Hormuz, one of the world’s most important oil and gas shipping routes. 

The deal also aims to restore shipping traffic through the strait to full capacity within 30 days, significantly reducing concerns over supply disruptions that had previously supported higher oil prices. 

Market participants viewed the agreement as a major step towards normalising energy flows from the Middle East, increasing expectations that additional Iranian crude could enter international markets in the coming months. 

Prospect of Higher Supply Weighs on Market Sentiment 

Analysts noted that traders have continued to price in a faster-than-expected return of Iranian oil exports following the memorandum of understanding between Washington and Tehran. 

The agreement includes plans for international support towards Iran’s economic recovery while postponing more complex issues, including discussions surrounding Iran’s nuclear programme. 

As supply concerns ease, investors are increasingly focusing on the possibility of excess production in the years ahead. The return of Iranian oil is expected to add significant volumes to global supply, potentially altering the balance between production and consumption. 

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IEA Warns of Potential Supply Glut 

The International Energy Agency (IEA) cautioned that if the agreement is fully implemented and energy exports normalise, the current supply shortage could eventually shift into a sizeable surplus. 

According to the agency’s latest market outlook, global oil supply could exceed demand by 5.05 million barrels per day in 2027 as additional Middle Eastern production returns to the market. Such a scenario may place further downward pressure on crude oil prices over the medium term. 

Federal Reserve Outlook Adds Demand Concerns 

Beyond supply developments, investors are also monitoring the outlook for US monetary policy. As per the report, the US Federal Reserve is increasingly considering the possibility of raising interest rates later this year to address inflationary pressures. 

Higher borrowing costs could slow economic activity and reduce fuel consumption, creating additional headwinds for oil demand. Recent projections showed that nine of the 19 Federal Reserve policymakers now expect at least one rate hike this year, marking a notable shift from earlier forecasts. 

The prospect of tighter monetary policy has added another layer of caution to energy markets already adjusting to changing supply expectations. 

Conclusion 

Crude oil prices remain under pressure as investors assess the implications of the US-Iran peace agreement and the potential return of significant Iranian oil supplies to the global market. While the reopening of the Strait of Hormuz reduces immediate supply risks, concerns about a future supply surplus and the possibility of higher US interest rates could continue to influence oil market sentiment in the coming months. 

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