Oil benchmarks climbed sharply on Monday as market participants reacted to reports that Iran had struck a U.S. navy vessel with missiles near the Strait of Hormuz. Prices were lifted by initial accounts of a direct confrontation in a strategic shipping lane before some of the early gains were trimmed later in the trading session.
Iran's navy told state television on Monday that it had prevented enemy warships from entering the Strait of Hormuz through rapid warnings, according to the state broadcast. The semi-official Fars news agency published a report saying a U.S. warship was struck by two missiles while sailing near the port of Jask at the southern entrance to the strait and that the vessel turned back from its attempted transit.
At the same time, a senior U.S. official denied that a U.S. ship had been struck by Iranian missiles, an account attributed to an Axios reporter. The conflicting reports contributed to sharp, short-lived moves in oil markets as traders weighed the credibility and implications of each side's statements.
Iran's armed forces issued multiple warnings on Monday to foreign navies against crossing into the Strait of Hormuz and said they would respond decisively to such movements. Those warnings came ahead of a separate announcement attributed to President Donald Trump on Sunday that the U.S. would begin efforts on Monday morning to free ships stranded in the strait as a humanitarian gesture to aid neutral countries in the U.S.-Israeli war with Iran.
Markets initially reacted to the possibility of direct military action in a chokepoint that handles a significant flow of seaborne oil by sending crude and Brent futures up as much as 5% in early trading. Later in the session, oil futures relinquished some of those gains as the news flow evolved and denials were reported.
Context and market reaction
The sudden escalation in reports produced immediate price volatility in energy markets. The initial price spike reflected traders' sensitivity to disruptions near the Strait of Hormuz, while subsequent profit-taking and the U.S. denial of a hit eased some upward pressure.
What remains uncertain
The episode is marked by contradictory statements from Iranian outlets and a U.S. official, leaving key details unresolved. It is unclear, based on the available accounts, which version will be corroborated by additional evidence or independent confirmation going forward.
Reporting on this incident remains limited to the statements and accounts described above.