Tensions in the Strait of Hormuz have escalated significantly, primarily driven by President Donald Trump's decision to reinstate a naval blockade on Iran and impose a 20% fee on cargo transiting the strait. This move, which some analysts estimate could add about $16 per barrel to oil shipped through the waterway, signals a heightened risk of supply disruptions rather than just increased shipping costs. The market had previously anticipated a surplus of oil, but renewed conflict threatens these forecasts, particularly if the strait experiences further closures.
Following Trump's announcement, Brent crude, the international benchmark, jumped by 10% to $83 a barrel, with later reports showing it hitting one-month highs between $84.66 and $87.33 per barrel. US West Texas Intermediate futures similarly rose to about $79.91 to $81.18 per barrel. The volatility was exacerbated by US airstrikes on Iran and Iran's retaliatory missile attacks on two Emirati tankers, Mombasa and Al Bahyah, killing one sailor and injuring eight. This has led to a sharp decrease in vessel traffic through the strait, with one report indicating a 50% drop compared to the previous week, and another showing only 14 ships crossing on a Sunday, down from 37 a week prior.
Analysts are concerned that a complete shutdown of the Strait of Hormuz, or even prolonged disruptions, could lead to severe consequences. Henry Hoffman of Catalyst Energy Infrastructure Fund noted that if crude cannot be exported, storage tanks will fill up, potentially forcing producers to halt output, thereby creating a much larger effective supply loss than simply damaged infrastructure. Rory Johnston of Commodity Context warned that traffic is "grinding to a halt," and an analyst further suggested that a move to $100 per barrel is possible if physical shortage risks become apparent. Citi also warned that implementation of military action could significantly increase escalation risks.
The timing of these disruptions is particularly challenging. The International Energy Agency (IEA) had anticipated a return to an oil market surplus by late 2026, contingent on stable tanker traffic. However, the current situation undermines this outlook, especially as Asian demand is expected to rebound, making reliable Middle Eastern supply even more critical. The possibility of the Iranian regime walking away from last month's US-Iran memorandum of understanding until after the U.S. midterm elections has also risen, a scenario that would likely result in higher oil prices for longer.
Despite the immediate price surge, some experts, like Norbert Rucker of Julius Baer, suggest that existing supply chains might be able to buffer a prolonged disruption due to recent increased flows. However, the overall consensus among analysts is that the renewed tensions and the potential for prolonged conflict in the Strait of Hormuz significantly increase the risk of an expensive winter for global energy consumers, shifting market focus from oversupply concerns to the enduring security of Gulf energy exports.
