Oil futures surged more than 5% on Tuesday after the U.S. Treasury revoked a license authorizing Iranian oil sales, following attacks on three commercial vessels in the Strait of Hormuz.
The revocation marks a sharp reversal from the tentative agreement reached last month. On June 21, the Treasury Department had issued a 60-day license allowing Iran to sell crude oil and petrochemical products, a landmark sanctions relief that was set to expire August 21. The new action cuts that window short, permitting only wind-down transactions through July 17.
A U.S. official told Reuters that Iran’s conduct in the Strait of Hormuz was “wholly unacceptable” and would be met with consequences. According to the U.S. Joint Maritime Information Center, three tankers reported being struck by unknown projectiles on Tuesday in or near the critical waterway, prompting Washington to raise its threat assessment for the region to “severe.”
Brent crude futures for September delivery jumped 2.75% to $76.18 per barrel, while West Texas Intermediate futures for August rose 2.75% as well, according to CNBC reporting. The gains reflect investor concern over potential supply disruption in a waterway through which roughly a fifth of global oil and liquefied natural gas shipments passed before the war.
The Strait of Hormuz lies between Iran and Oman and serves as one of the world’s most critical energy choke points. Any prolonged disruption could push energy prices higher and increase pressure on consumers and governments already facing elevated fuel costs.
Bob McNally, president of Rapidan Energy Group, said the developments “signal that the ceasefire is not as solid and durable as the oil market has chosen to assume,” and added that “the oil market has some risk pricing to do.” McNally’s assessment reflects broader uncertainty about whether the fragile agreement between Washington and Tehran will hold amid escalating military tensions.
Oil exports remain a critical revenue source for Iran, providing billions of dollars in hard currency that support government spending and an economy weakened by years of U.S. sanctions. Despite restrictions, Tehran has managed to expand shipments in recent years, largely to China, making oil sales one of the country’s most important economic lifelines. The revocation of the license cuts off that revenue stream and underscores the volatility of energy markets tied to Middle East geopolitics.
Sources
- Reuters — U.S. revocation of Iran oil sales license, official statements, oil price reaction, and McNally analysis
- CNBC — Oil futures price movements on July 8, 2026
- The New York Times — U.S. revocation of Iran oil sanctions waiver after tanker attacks
- Office of Foreign Assets Control — Official Treasury Department license revocation and wind-down terms
- Trading Economics — Brent crude price data for July 8, 2026
