Brent Oil Surges Past $97 Amid Renewed US‑Iran Tensions and Hormuz Shipping Concerns

Brent crude was quoted at $97.39 a barrel on Monday, September 7, up 1.15% on the day and extending last week's gains, as the United States and Iran traded strikes on shipping and the Strait of Hormuz stayed the market's central risk.

The escalation is specific and recent. Al Jazeera reported on September 6 that Washington had targeted three Iranian oil tankers over 24 hours while Tehran hit tankers and fired a ballistic missile toward US warships patrolling near the strait. That followed the first US strikes on Iranian tankers on September 2, reported by Axios, and a strike near Kharg Island on September 5. Roughly a fifth of the world's oil normally transits Hormuz, which is why a tanker exchange rather than a production outage is moving the curve.

The pressure is showing up inside Iran as well. Iranian authorities announced on September 6 that the third tier of the domestic petrol price would double from 5,000 to 10,000 tomans a litre, about 4.5 US cents, from the morning of September 8, with the first two tiers held at 1,500 tomans for the first 60 litres a month and 3,000 tomans for the next 50 . Government spokeswoman Fatemeh Mohajerani confirmed the effective date. It is a sanctions-era rationing measure, not a market price.

For US consumers the cost is already banked rather than prospective. Brown University's Watson Institute tracker, reported by Axios and republished by Al Jazeera, puts the additional spend on petrol and diesel at about $100 billion in the six months since the conflict began on February 28, roughly $763 per household across about 131 million households. Petrol has risen 39% from $2.98 to $4.15 a gallon and diesel more than 60%, from $3.67 to $5.90. The Watson figure is an explicitly live running total, not a settled estimate.

What to watch from here is whether the tanker exchange stays contained. A de-escalation or any brokered pause on shipping attacks would take the risk premium out quickly, while a strike on port or export infrastructure rather than vessels would be the escalation that moves crude beyond the current range. Diesel is the more informative price to follow than crude, because refining capacity, not barrels, is where the squeeze has actually landed.