| Quick Answer US-Iran conflict explained: The US and Iran have been in an active conflict since February 2026, centred on the Strait of Hormuz — a narrow waterway that carries about a fifth of the world’s oil… Repeated attacks on tankers and warships there have already pushed Brent crude up by around 40% since the fighting began, with prices touching close to $98 a barrel in early September 2026. Yes, the conflict could push oil prices even higher if disruption to shipping continues, though most forecasters expect prices to ease once the situation stabilises. |
If you’ve filled up your car recently and noticed the price creeping up, there’s a good chance the US-Iran conflict is part of the reason. This isn’t a small, far-off disagreement — it’s an active military conflict that’s been running for months, and it’s playing out in one of the most important waterways for global oil. Here’s what’s actually going on, explained simply, and what it could mean for prices at the pump.
US-Iran Conflict Explained: How It Started
The fighting erupted in late February 2026 after the US and Israeli airstrikes targeted military and government facilities in Iran, hitting off several key figures in the Iranian government. Ever since, the engagement has seen multiple escalations and de-escalations. A ceasefire memorandum was signed in mid-June, and a temporary pause in the hostilities was declared. However, it was revoked in early July after the Iranians began targeting commercial ships in the Strait of Hormuz, and the fighting continues to this day.
It has been going on for more than 190 days as of early September 2026. According to the Pentagon death toll figures released by the US military outlets, 18 American soldiers have been killed and around 800 injured in addition to significant casualties on the Iranian side.
Why the Strait of Hormuz Matters So Much
Here’s where the fighting in faraway places intersects with your gas bill: the Strait of hormuz, a narrow strip of water between Iran and Oman. A little over 21 miles at its narrow point, this strategic waterway is the preferred route for 1 of every 5 world’s oil, that goes through the strait of hormuz in the form of tankers headed for Asia, Europe, and elsewhere.
Since the fighting began, both sides have attacked each other’s tankers and shipping traffic in the region. The U.S. has attacked Iranian oil tankers while Iran has targeted commercial ships and fired upon U.S. warships that have been in the waters patrolling the strait. Iran has also proposed a mediated safe passage, through the strategic waterway, along with Oman. That leaves oil traders nervous, and nervous traders will cause prices to rise even if the obstruction is only imagined.
What’s Actually Happening to Oil Prices?
The figures speak for themselves. Brent crude, the global oil price benchmark, was trading close to $98 a barrel in early September 2026 — around 40% higher than before the conflict began. US crude (WTI) has followed a similar path, moving above $92 a barrel.
That’s not a straight line up, though – the price of oil is extremely volatile at the moment and swings dramatically up and down depending on news of what’s happening on the ground – a new strike reported, and the price jumps up, but then if there seems to be any prospect of a ceasefire or safe-passage deal, it drops back down again. The fluctuations are an indicator of how much oil markets are exposed to the current geopolitical situation.
It was also a concern for motorists in the US, where the average price of a gallon of petrol reached around $4.15 in early September, having risen by several cents during the week, according to AAA Gas Prices data.”
Could Prices Go Even Higher?
Quite possibly, yes, but that will probably depend on how things develop. Goldman Sachs analysts have projected oil prices to climb beyond the $120 a barrel in 2027 if Gulf oil production stays well below pre-war levels for an extended period, though they stress this isn’t their main expectation. Their central forecast has Brent settling closer to $85 a barrel threshold by the end of 2026 as some of the constraints on supply are partially lifted.
The US Energy Information Administration seems to agree, forecasting Brent to average around $85 a barrel in the third quarter of 2026, if the situation in the Strait of Hormuz begins to normalize instead of deteriorating.
In other words, if the geopolitical tensions are to be calmed down, oil prices are to be expected to follow suit. On the other hand, if the free flow of oil through the strait is to be impeded instead, there is a good chance that they will climb even higher than that.
What This Means for You
- At the pump: Expect petrol prices to stay sensitive to conflict headlines for as long as the situation continues.
- Household bills: Higher oil prices tend to filter through to heating costs and the price of anything transported by lorry or ship — which is most things.
- Investments: If you hold any funds with energy exposure, this is a period where energy shares may move more than usual.
- The bigger picture: Even a partial resolution, like a safe-passage agreement, could calm markets faster than a full ceasefire would take to negotiate.
Frequently Asked Questions
Why did the US and Iran start fighting in 2026?
The conflict began in February 2026 following US and Israeli airstrikes on Iranian military and government targets. It has continued through a collapsed ceasefire and ongoing clashes, particularly around the Strait of Hormuz.
Why does the Strait of Hormuz affect oil prices so much?
Around one-fifth of the world’s oil passes through this narrow waterway. Any disruption to shipping there raises fears of a supply shortage, which pushes prices up even before actual supply is affected.
How much have oil prices risen because of the conflict?
Brent crude has risen by roughly 40% since the conflict began, trading close to $98 a barrel in early September 2026, compared with pre-conflict levels.
Will petrol prices keep rising?
It depends on how the conflict develops. Prices have already reached around $4.15 a gallon in the US and could rise further if shipping disruption in the Strait of Hormuz continues or worsens.
Is a ceasefire likely soon?
A previous ceasefire collapsed in July 2026, and while there have been discussions about safe-passage arrangements for ships, no lasting resolution had been confirmed as of early September 2026.
