
Iran says it controls Strait of Hormuz traffic as UKMTO raises threat level to severe. WTI crude surged $1.96 to $70.56, the biggest single-day gain in weeks.
Iranian state-run Press TV reported Monday that traffic in the Strait of Hormuz is being conducted according to Tehran's arrangements, hours after the United Kingdom Maritime Trade Operations raised the threat level in the waterway to severe.
West Texas Intermediate crude jumped $1.96, or 2.85%, to $70.56 a barrel, near the session's high. The move came as the UKMTO warned that deliberate hostile action is likely under current conditions and that mine-risk reporting remains relevant within and adjacent to the Traffic Separation Scheme. The agency cited persistent navigation interference and routing pressure from Iran’s Islamic Revolutionary Guard Corps, particularly against vessels broadcasting Automatic Identification System signals.
The Strait of Hormuz handles roughly a fifth of the world’s oil supply. Any disruption to tanker traffic there typically triggers an immediate security premium in crude prices. The UKMTO’s escalation to “severe” – its highest advisory level – signals that the threat environment has shifted from potential to probable.
Press TV, citing Iranian officials, said the country's arrangements ensure safe passage but did not detail what those arrangements entail. The report offered no timetable for the measures.
For a broader look at how crude has traded through the summer amid options-driven caps and geopolitical headlines, see WTI and Brent Settle Into Summer Range, Options Cap Action.
The oil price spike also rippled through currency markets. The Canadian dollar, Norwegian krone, and Russian ruble – all sensitive to crude revenues – strengthened against the greenback in afternoon trading. The correlation between oil and forex pairs like [USD/CAD](/markets/gold-surge-lifts-tsx-300-points-after-weak-us-jobs-data) often tightens during supply-shock events.
The UKMTO advisory applies to all vessels transiting the Strait of Hormuz and the broader Persian Gulf approach. Shipping companies have been advised to review security protocols and maintain AIS activation unless instructed otherwise by naval authorities.
Crude settled near its best level of the day, a sign that traders were unwilling to fade the headline risk into the close.
Prepared with AlphaScala research tooling and grounded in primary market data: live prices, fundamentals, SEC filings, hedge-fund holdings, and insider activity. Each story is checked against AlphaScala publishing rules before release. Educational coverage, not personalized advice.