Crude oil prices fell more than 1% on Tuesday after the United States unveiled a broader sanctions campaign against Iran, with the market weighing the potential impact on Iranian exports against profit-taking following last week’s strong rally.
As at the time of writing 09:00 am (WAT) Brent crude fell 0.82% to $91.41 a barrel, while West Texas Intermediate (WTI) crude declined 0.79% to $84.34 as the market assessed the impact of the latest US sanctions on Iran and the potential implications for global oil supplie. Earlier market data had placed Brent at $92.32 and WTI at $85.18, after both benchmarks gained more than 5% last week on heightened concerns over Middle Eastern supply disruptions.
The US Treasury said the new measures, announced by Treasury Secretary Scott Bessent under what Washington termed “Operation Economic Outcast,” target almost 60 individuals, entities and vessels linked to Iran. The measures expand secondary sanctions that could expose foreign companies dealing with Tehran to exclusion from the US financial system.
The sanctions cover Iran’s digital assets, technology, gold, aviation and shipping sectors, while existing restrictions on its financial, petroleum and petrochemical industries remain in force. The latest designations specifically target brokers, companies and vessels involved in transporting Iranian crude and petroleum products and moving revenues to the Islamic Revolutionary Guard Corps-Quds Force and other Iranian entities.
The immediate concern for the oil market is the effect on Iranian crude exports. China takes more than 80% of Iran’s seaborne oil, but Iranian crude imports into the country are estimated to have fallen to 534,000 barrels per day in August from 823,000 bpd in July, according to figures cited by Oilprice.com. Washington did not, however, target major Chinese banks in Monday’s sanctions package, leaving a critical channel for Iranian oil trade exposed.
Iran’s offshore crude inventories are also coming under pressure. Iranian crude held outside the Persian Gulf and Gulf of Oman reportedly fell to about 83 million barrels, from more than 100 million barrels before the US reinstated its blockade in mid-July. Around 40 million barrels were reportedly held in floating storage near Singapore, with market participants estimating that only about 4 million barrels remained unsold.
Despite the scale of the sanctions, the initial oil-price reaction was bearish as traders took profits and assessed whether the new measures would translate into a material reduction in physical supply. The market is also watching the response from China, Iran’s principal seaborne crude customer, as stronger enforcement against intermediaries could make Iranian barrels more difficult and expensive to move.
The broader risk remains centred on whether tighter sanctions trigger a deeper reduction in Iranian exports or provoke further disruption to regional shipping. With the Strait of Hormuz already under pressure, any additional loss of supply or deterioration in tanker access could quickly reverse Monday’s decline and restore a significant geopolitical premium to crude prices.