After concerted strikes on Iranian targets by the United States and Israel, global oil markets are braced for a potential supply shock that traders warn could eclipse disruptions last seen in the 1970s. The immediate trigger is a sharp escalation in Gulf tensions: Iran’s Islamic Revolutionary Guard Corps announced a ban on vessel transit through the Strait of Hormuz, and a tanker attempting passage was reportedly struck and began to sink.
The strategic importance of the strait is stark. Kpler data show roughly 13 million barrels per day of crude sailed through Hormuz in 2025, accounting for about 31% of seaborne oil flows. Any meaningful interruption to that corridor would force rapid rerouting, higher insurance premiums and a dramatic re-pricing of risk across crude and refined product markets.
Market analysts and energy strategists are warning that the real question is not whether prices spike at the first sign of conflict, but how long any disruption lasts. Vandana Hari, chief executive of Vanda Insights, warned that the situation could evolve into an unprecedented full-scale confrontation between the US and Iran, with trajectory and duration that are almost impossible to model. She said that unless US forces substantially degrade Iran’s naval capabilities and guarantee Hormuz remains open, the oil market faces the worst-case scenario of major, prolonged supply interruption.
Other energy specialists lay out a range of plausible losses and knock-on effects. Rapidan Energy’s Bob McNally called the events "extremely serious" given the global dependence on Hormuz flows, while MST Marquee’s Saul Kavonic suggested initial market pricing would have to account for scenarios ranging from Iranian export losses of up to 2 million barrels per day to targeted strikes on Gulf infrastructure or, in the most extreme case, a closed strait. Kavonic warned that such dynamics could push international crude above triple-digit levels and lift LNG prices back toward the spikes seen in 2022.
Analysts also point to a non-negligible probability that the crisis could broaden. Andy Lipow of Lipow Oil Associates estimated roughly a one-in-three chance that Saudi Arabian oil infrastructure could be attacked and the Strait of Hormuz effectively shut, a combination he described as the single most dangerous outcome for global energy security. Traders expect an "instinctive spike" in oil futures when markets reopen as participants price in the immediate, tangible risks.
The global economic consequences would be multifaceted. A sustained jump in crude and LNG prices would rekindle inflationary pressures, complicate central bank policy, and strain energy-importing emerging markets. Shipping costs and delivery times would rise as vessels detour around the Cape of Good Hope, while insurers would drive up war-risk premiums. Policymakers could respond with strategic petroleum reserve releases or coordinated diplomatic and military measures, but those are stopgaps against the broader economic pain of months-long supply constraints.
How states respond in the coming days will shape both the market arc and the geopolitical fallout. A strong US military effort to reassert transit freedom through Hormuz would reduce the direct risk to shipping but could deepen regional conflict and invite retaliatory strikes on Gulf infrastructure. Alternatively, de-escalation through diplomacy would calm markets but require significant concessions and verification measures that may be politically costly for the actors involved.
The single clearest takeaway for traders and policymakers is that timing and duration matter more than the first headline. A brief flare-up would cause a sharp but transient price jump; an extended closure or campaign of strikes against Gulf producers could inflict broad economic damage and test the resilience of global energy architectures established since the last major oil shock more than half a century ago.