- Lead. Brent crude settled at $94.86 per barrel on September 2, up roughly 5% on the day and the highest closing price since late July, as fresh US strikes on Iranian targets reawakened supply-risk fears around the Strait of Hormuz.
- Fact. The Strait of Hormuz carries approximately 20% of the world’s seaborne oil trade; any closure or sustained military confrontation in its waters would affect volumes from Saudi Arabia, Iraq, Kuwait, the UAE and Iran itself.
- Stake. Brent has risen more than 13% over the past month and is up more than 40% year-on-year, compressing margins for airlines, petrochemical producers and shippers globally while reigniting central-bank concerns about energy-driven inflation.
Oil markets swung sharply upward on September 2 after the Pentagon confirmed that US Central Command had launched a new round of strikes against Iranian Revolutionary Guard Corps positions around the Strait of Hormuz. The strikes, CENTCOM said, were a response to Iran’s reported attempt to deploy additional sea mines in the waterway and to a missile attack against a US military base in Jordan the previous day. Brent crude’s move to $94.86 followed a prior spike above $90 in the previous week when the first wave of renewed strikes was announced.
Why Markets Repriced on Tuesday
The mine-laying allegation proved the more potent catalyst. Mines in the Strait would physically threaten tanker transit regardless of whether an agreed ceasefire holds—they would need to be swept before shipping could safely resume at normal volumes. Iran denied placing mines, and the allegation has not been independently verified. But traders did not wait for confirmation. Options markets showed a spike in near-term volatility contracts for Brent, and open interest in the $100-strike December call surged as hedgers moved to protect against a further escalation scenario.
West Texas Intermediate tracked Brent higher, settling near $91 per barrel. The spread between the two benchmarks widened slightly, reflecting the incremental logistical risk premium attached to Gulf cargoes specifically. Natural gas prices also firmed, as LNG tankers transiting the Gulf face the same passage risks as crude carriers.
Supply Risk Calculus
About 21 million barrels per day of crude and petroleum products pass through the Strait of Hormuz in normal conditions, according to analysts tracking the 2026 Hormuz crisis. The US naval blockade currently in place has already reduced that flow, with some shippers rerouting through the longer—and more expensive—Cape of Good Hope route. A scenario in which active mine-laying was confirmed would force additional diversions and push freight rates to levels last seen during the 2019 tanker attacks in the Gulf of Oman.
Saudi Arabia and other Gulf producers have continued to pump oil uninterrupted and have indicated they could increase output to compensate for any Iranian shortfall; Iran’s own exports have been suppressed by sanctions and the conflict for months. The near-term supply risk centres on logistics and sentiment rather than physical production volumes.
What Traders Are Watching
Three near-term catalysts will determine whether Brent consolidates around $95 or presses toward $100. First is whether CENTCOM confirms or denies the mine-laying allegation with evidence—a confirmation would be market-moving. Second is the US CPI reading due September 10, which will influence whether the Fed’s expected hike on September 16 is framed as an energy-shock response or a broader inflation-fighting move. Third is whether the Oman-mediated back-channel produces any public signal of de-escalation before the next scheduled round of US-Iran talks.