Conflicting statements from Washington and Tehran over the Strait of Hormuz have exposed the weakness of the supposed de-escalation. The waterway may be nominally open, but in practice it remains under coercive control, with oil markets, European economies and the wider security order once again hostage to brinkmanship.
The Strait of Hormuz has become less a shipping lane than a political instrument. Donald Trump says it is open. Tehran says it is open. Yet the hard fact, according to Reuters reporting on Iranian conditions for transit, is that commercial vessels still require approval from the Islamic Revolutionary Guard Corps and must use routes designated by Iran as safe. That is not freedom of navigation. It is conditional passage under military supervision.
Trump’s own language has added to the confusion. In a statement reported by Reuters on 17 April, he declared the Strait “open and ready for business”, while insisting that the American naval blockade on Iran would remain “in full force” until a wider deal was completed. In other words, Washington presented reopening as a fact while simultaneously maintaining coercive pressure as leverage. Tehran responded in kind: its foreign minister declared the Strait open, but Iranian officials made clear that access would remain controlled and revocable. The result is not clarity but a staged ambiguity in which both sides claim success while neither has restored normal conditions.
This matters because Hormuz is not a symbolic theatre. It carries roughly a fifth of the world’s oil and LNG trade, and Reuters has reported that hundreds of vessels remain stalled in the Gulf while shipowners weigh the risks from mines, military controls and the possibility of another sudden closure. A waterway that can only be used with the blessing of the IRGC is not secure. It is a choke point with paperwork.
The market response has been equally revealing. Reuters reported that Brent crude fell 9 per cent on 17 April, settling at $90.38 a barrel after Iran signalled that passage might resume. But that drop did not reflect a settled return to normality. It reflected traders grasping at the possibility that the worst might be over. The wider picture, set out in another Reuters analysis of the oil market and in its earlier reporting on distorted pricing, is that the war has exposed just how vulnerable the global economy remains to political and military signalling in the Gulf.
For Europe, that vulnerability is not abstract. Higher oil prices feed directly into inflation, transport costs and industrial pressure at a time when the continent is already trying to sustain defence spending, support Ukraine and manage weak growth. A prolonged Hormuz crisis would not simply be a Middle Eastern problem. It would raise the cost of energy across Europe and, by lifting hydrocarbon revenues, could also strengthen Russia’s ability to finance its war. That strategic link is not speculative; it follows directly from the structure of energy markets and from Europe’s continued exposure to global oil shocks. The Strait is thousands of miles from Brussels, but its politics can still land on European balance sheets within days.
Trump now faces a dilemma partly of his own making. The conflict has exposed the economy as his political weak point, with fuel prices and inflation threatening domestic support. He wants the image of pressure without the price of escalation. Tehran wants the leverage of disruption without inviting a full American assault. That is why both sides have reached for contradictory formulas: open, but not open; de-escalation, but under threat; passage, but by permission.
The problem with such arrangements is that they do not stabilise anything. They postpone a reckoning. Fresh signs of tension emerged on 18 April, including reports from vessels attempting to cross the Strait and a defiant tone from Tehran. The supposed reopening therefore looks less like a breakthrough than a pause between confrontations.
What has emerged is a simple truth dressed up in diplomatic fog. Hormuz is open enough for press statements, but not open enough for confidence. Until there is a clear settlement on navigation, sanctions and enforcement, the Strait will remain a bargaining chip in a wider contest between an American president trying to force a deal and an Iranian regime determined not to look as though it yielded. In that contest, markets do not need a formal closure to panic. They need only uncertainty. Right now, uncertainty is the one commodity both Washington and Tehran are supplying in abundance.
