An exchange of fire between US and Iranian forces in the strategically vital Strait of Hormuz has sent global oil prices climbing. The incident saw the global Brent oil benchmark briefly surge nearly 3% to almost $103 a barrel before settling back to around $100. This confrontation comes amidst ongoing tensions between Washington and Tehran, raising concerns about stability in the crucial shipping lane.

The United States confirmed it undertook self-defense strikes in response to what it described as unprovoked Iranian attacks as US vessels navigated out of the Gulf. President Donald Trump later stated that three US destroyers were involved, asserting that several Iranian boats were “completely destroyed” and incoming missiles targeting US ships were “easily knocked down.” Conversely, Iran accused the US of violating an existing ceasefire by targeting its ships, including an oil tanker, near the Strait. Iranian forces claimed they responded to “aerial attacks” along the coastline and inflicted “significant damage” on US military vessels. The US military, however, denied its ships sustained any hits and affirmed it was not seeking to escalate the conflict.

Despite the skirmish, President Trump maintained that the US-Iran ceasefire, agreed upon in April, remains in effect, even characterizing the Iranian strikes as a “love tap.” He also indicated that negotiations with Iran are ongoing, reiterating Washington’s firm demand that Tehran never acquire nuclear weapons, warning of “a lot of pain” if a deal is not reached. The Strait of Hormuz itself is a critical maritime choke point, through which more than a fifth of the world’s oil and gas typically transits, and has been impacted by the broader US-Israel conflict with Iran, which commenced in late February. Prior to this conflict, oil traded around $70 a barrel.

The renewed hostilities have not only impacted crude oil but also significantly driven up prices for related products, with jet fuel seeing an approximately 50% increase. British Airways’ parent company, IAG, anticipates its fuel costs to reach €9 billion this year, an increase of about €2 billion from the previous year. While IAG has secured pricing for roughly 70% of its fuel needs for the remainder of the year and reports no immediate availability issues, market analysts view the current ceasefire as fragile. The latest clashes underscore the persistent volatility and the considerable distance that remains before a full resolution to the broader conflict can be achieved, limiting investor confidence in a quick recovery for affected sectors.