The US Iran strikes oil price above $91 a barrel on Tuesday as London’s stock market returned from the Bank Holiday break to find the Middle East conflict escalating sharply and energy markets pricing in fresh disruption to Gulf supply routes. Brent crude, the international benchmark, extended gains from the previous session as fighting resumed between American and Iranian forces.
The immediate trigger was a US attack on Iranian rocket launchers that were reportedly preparing to lay mines in the Strait of Hormuz. According to Gulf News, the 30 August strikes represent the first known direct US attack on Iranian forces since late July, ending a period of relative quiet and marking a clear shift in the pace of the confrontation.
Eight missiles fired at US bases as US Iran strikes oil price climbs
Iran’s retaliation came swiftly. Fox News reported that Iran launched eight ballistic missiles targeting US military bases in Jordan, all of which were intercepted. Iran also targeted US military positions in the United Arab Emirates as part of the same response.
The geography of the original US strike adds context to the energy market’s reaction. The launchers targeted by the US were positioned near Larak Island, which, according to The Hill, lies off the coast of Bandar Abbas, close to the Strait of Hormuz. Roughly a fifth of the world’s oil supply passes through that chokepoint, and any credible threat to mining operations there tends to move crude prices quickly.
Achilleas Georgolopoulos, senior market analyst at Trading Point, said the fresh military operations were pushing oil higher. He cautioned, however, that the rally appeared to ‘lack momentum’ needed to push prices above the highs seen earlier in the conflict. The ceiling, in other words, has not yet been broken.
Diplomatic track stalls as Trump warns of harder response
The spike in tensions has done visible damage to the diplomatic track. ‘While no one is surprised by these events, expectations for progress in the US-Oman-Iran negotiations have clearly taken another hit,’ Georgolopoulos said.
The White House had last week signalled a shift away from direct military measures, with officials indicating a preference for strangling the Iranian economy through tighter sanctions enforcement. That approach now appears to be in question. President Trump, speaking to Fox News, left little ambiguity about his intentions: ‘We’re going to hit them hard. There will be a response.’ He also branded Iran ‘officially a failed nation without an airforce, a navy or a currency’.
The remarks follow a pattern that has defined this phase of the conflict. Each military exchange prompts a hardening of rhetoric on both sides, narrowing the space for the negotiating channel that US officials, alongside Omani intermediaries, have been trying to keep open. Iran’s decision to fire at US bases in Jordan rather than confine its response to the immediate theatre around Hormuz suggests it too is prepared to broaden the scope of engagement.
For London markets, the return from the Bank Holiday brought a straightforward read: geopolitical risk premium back in oil, pressure on equities, and the Brent crude price sitting above $91 a barrel as traders weighed whether the escalation would be contained or extend further. Energy stocks were among the more resilient parts of the FTSE, while the broader index fell as investors absorbed the news from the weekend.
Georgolopoulos’s point about momentum is the one to watch. If oil fails to break through the previous conflict highs despite an exchange of this scale, it may suggest the market has partially priced in a prolonged but bounded confrontation. A fresh strike, or any credible move to disrupt Hormuz shipping directly, would test that assumption immediately. Trump’s stated intention to respond harder means another exchange of fire is, by his own account, already planned.
