# Brent Crude Tops $90 After American Strike on Larak Island and Iranian Retaliation

OPEC and its partners raised September production quotas by 188,000 barrels a day, but the risk premium tied to the Strait of Hormuz, not supply, is setting the price of crude.

- Published: 2026-09-01T05:19:32.860Z
- Canonical: https://polylog.news/2026-09-01/brent-crude-tops-90-after-american-strike-on-larak-island-an
- Publisher: Polylog (Global desk)
- Section: markets
- Sources: [The Hindu](https://www.thehindu.com/news/international/donald-trump-vows-to-hit-iran-hard-after-first-exchange-of-fire-in-weeks/article71413458.ece), [TASS](https://tass.com/economy/2180159), [CNBC](https://www.cnbc.com/2026/08/31/oil-prices-hormuz-iran-larak-island-centcom.html)

United States forces struck two Iranian rocket launchers on Larak Island, saying the Islamic Revolutionary Guard Corps was preparing to fire rockets carrying sea mines into the Strait of Hormuz. Iran responded with missile and drone strikes that it said targeted American forces at bases in Jordan and the United Arab Emirates, [The Hindu reported](https://www.thehindu.com/news/international/donald-trump-vows-to-hit-iran-hard-after-first-exchange-of-fire-in-weeks/article71413458.ece), in the first exchange of fire between the two countries in weeks. President Donald Trump said the United States would respond forcefully.

The retaliation caused no confirmed damage. Jordan's armed forces said their air defenses intercepted and destroyed eight missiles that entered Jordanian airspace before they could reach populated areas, [Al Jazeera reported](https://www.aljazeera.com/news/2026/8/31/iran-attacks-jordan-uae-after-us-bombs-larak-island-whats-the-latest). The United Arab Emirates said it intercepted an Iranian drone over its territorial waters and denied Iranian claims that its Al Minhad air base had been hit. Trump initially vowed that the United States would "hit them hard," then told reporters the response would be narrow, saying much of Iran's senior leadership had already been killed and that its navy and air force had been degraded, [according to The Hill](https://thehill.com/homenews/administration/6060630-us-iran-exchange-strikes/). Iranian state media gave conflicting casualty figures for the initial strike on Larak Island, with IRNA reporting two dead and Tasnim reporting three.

Crude prices moved immediately. [CNBC reported](https://www.cnbc.com/2026/08/31/oil-prices-hormuz-iran-larak-island-centcom.html) that oil rose after the strike, with Brent futures climbing about 3.4 percent to roughly $91 a barrel, [and the November contract quoted at $91.35](https://www.cornerstonefuturesllc.com/post/morning-highlights-brent-jumps-3-5-to-91-35-after-u-s-strikes-iranian-island-iran-hits-two-u-s). Washington and Tehran describe the same events in conflicting terms. The American military presents the Larak strike as preventing mines from being laid in a shipping lane, while Iranian statements describe its response as retaliation against foreign forces stationed in neighboring countries.

Supply policy is moving in the opposite direction from prices. TASS reported that [the OPEC+ group of seven raised its September production quota by 188,000 barrels a day, to 31.01 million barrels](https://tass.com/economy/2180159). That increase is small compared with the volumes at risk in the Gulf. Traders are not pricing in a shortage of oil underground. They are pricing the cost and availability of moving it through a waterway where flows have already been disrupted for months.

## What this means

The premium built into crude prices now reflects the risk of moving oil through the strait, not the risk to production, which is why an OPEC+ quota increase and a $90 Brent price can coexist. Refiners, airlines and shipping lines pay that premium through higher freight and insurance costs, and importers with no domestic oil production, including India, Japan and much of Europe, absorb it as a higher import bill. Producers outside the Gulf, including Russia, the United States and West Africa, collect the difference. Each round of strikes raises the baseline for that premium rather than removing it.

## What to watch

- War risk insurance rates for tankers transiting Hormuz, because they convert a military event into a permanent cost for every cargo that follows.
- Whether Iran carries out any mine laying in the strait, which would move the market from pricing risk to pricing an actual interruption of flows.
- Whether OPEC+ members with spare capacity add barrels faster than quota, which would show producers judge the disruption to be long-lasting.