Iran’s armed forces have issued a stark warning that any threat to its ports will put every harbor in the Persian Gulf and the Gulf of Oman at risk, sharply escalating tensions in an already volatile maritime corridor.

Through state media, senior commanders declared that security in the Persian Gulf and the Sea of Oman is either for everyone or for no one, framing the waterways as a shared lifeline that Tehran is prepared to disrupt if cornered. The message was widely interpreted as a signal that Iran could target commercial shipping, energy infrastructure, or naval assets belonging to states seen as backing pressure on Tehran.

The warning followed an announcement by the United States military that it intends to impose a comprehensive naval blockade on Iranian ports and coastal facilities after high‑level talks failed to secure a ceasefire in the broader Middle East conflict. A blockade would seek to choke off Iran’s seaborne trade and energy exports, raising the prospect of direct confrontation between US and Iranian forces.

Energy markets reacted immediately. Benchmark crude prices surged past 100 dollars a barrel as traders weighed the risk of supply disruptions from one of the world’s most strategically important oil‑producing regions. Analysts cautioned that even limited clashes or harassment of tankers could send prices sharply higher and strain fragile global supply chains.

In London, Prime Minister Keir Starmer moved to distance the United Kingdom from Washington’s strategy, insisting that Britain does not support the blockade and will not be dragged into the war. His stance reflects deep unease among European allies about further militarising the Gulf while diplomacy remains stalled.

At the heart of the standoff lies the Strait of Hormuz, the narrow chokepoint linking the Persian Gulf to the open ocean. Since the conflict with the United States and Israel intensified, Tehran has effectively shut the strait to normal traffic, using naval patrols, mines, and the threat of missile strikes to deter passage. In peacetime, roughly one fifth of the world’s oil flows through this channel, making its closure a global economic shock.

US President Donald Trump has repeatedly urged allies, particularly in Europe and Asia, to dispatch warships to help reopen the strait and share the burden of securing energy routes. The response has been muted, with many governments wary of being drawn into a direct clash with Iran and of further inflaming a region already on the brink.