The ink is barely dry on the US-Iran ceasefire, and it’s already under pressure. Iran’s military command announced Saturday that it had shut the Strait of Hormuz again, blaming renewed Israeli strikes in Lebanon. The US military immediately pushed back, insisting traffic through the waterway never stopped and that Iran has no actual control over it.
This is the first real crisis test for a deal that was signed just days ago. And it’s exposing exactly how fragile that deal really is.
Washington Says the Strait Never Closed
US Central Command was blunt about it. A CENTCOM spokesperson said Iran does not control the Strait of Hormuz, that traffic continues to flow, and that American forces are actively monitoring the situation to keep it that way. According to the US military, 55 merchant ships moved through the strait on Saturday alone, carrying more than 17 million barrels of oil. That’s not the picture of a closed waterway — it’s the opposite.
So right away, you have two completely contradictory claims. Iran says it shut the strait down. The US says nothing actually closed. Both sides are talking past each other, and that gap is the real story here.
Trump’s Toll Threat
President Trump didn’t just deny Iran’s claim — he raised the stakes with a new threat. He posted that there will be no tolls in the Hormuz Strait for the full 60-day ceasefire period, and no tolls after that period either, unless those tolls are imposed by the United States itself if a final deal isn’t reached. He framed any future American toll as payment for what he called acting as the “Guardian Angel” of the Middle East — compensation, in his words, for past, present, and future security costs.
This is actually a reversal for Trump. He had previously told reporters the strait should stay permanently toll-free, full stop. Now he’s floating the idea that the US could charge tolls itself if Iran doesn’t fully deliver on the agreement. His own Vice President had said just days earlier that the strait would stay toll-free “for the long term.” The messaging from the administration isn’t fully aligned right now.
Why Iran Is Doing This — It’s About Lebanon, Not Hormuz
Here’s the part that matters most. Iran’s stated reason for closing the strait has nothing to do with the strait itself. It’s about Lebanon. Israel has continued striking Hezbollah targets despite a supposed ceasefire there, and dozens of Lebanese civilians have reportedly been killed in the past two days alone — some of the worst violence of the entire conflict.
Iran is arguing that since the broader ceasefire memorandum is being violated in Lebanon, it has no obligation to keep Hormuz open. Iranian state media aligned with the Revolutionary Guard has gone further, warning its own negotiators not to show up to upcoming talks in Switzerland without leverage in hand. The message from Tehran is simple: Trump signed this deal, so if he can’t make Israel stop in Lebanon, the rest of the agreement is on the table too.
In short, Iran appears to be using its claimed control over Hormuz as a pressure point to force action on a completely separate front of this conflict.
The Real Problem: Neither Israel Nor Hezbollah Signed This Deal
This is the structural flaw nobody can easily fix. The ceasefire memorandum was signed by the US and Iran. Israel and Hezbollah are not signatories to it. So Iran is threatening to walk back its own commitments over a fight it doesn’t actually have the power to stop — because the two parties actually firing at each other in Lebanon never agreed to anything in this deal to begin with.
Hezbollah has reportedly told Iran it will only honor a Lebanon ceasefire if Israel publicly commits to one first. Israel’s military says it remains committed to a ceasefire, conditional on Hezbollah holding up its end. Both sides are blaming each other. Meanwhile, Iran is holding Hormuz hostage to a dispute it doesn’t control the outcome of.
Tolls vs “Service Fees” — A Dispute Over Words
There’s also a quieter argument happening underneath all this — what to actually call any fees charged in the strait. Iran insists it’s not collecting tolls, but rather “service fees” to cover things like navigation assistance, vessel insurance, and environmental protection measures it says it jointly manages with Oman.
That distinction matters a lot to Iran’s negotiators, even if it sounds like wordplay to everyone else. Charging any kind of fee on an international shipping route is unusual globally and widely seen as breaking standard freedom-of-navigation norms. Before this war started in February, ships passed through Hormuz completely free. During the conflict, Iran’s Revolutionary Guard ran what amounted to a literal tollbooth, charging over a million dollars per ship in some cases before letting vessels through.
Gulf Countries Are Stuck in the Middle
This dispute isn’t just a US-Iran problem — it threatens to drag in the whole region. Several Gulf Cooperation Council states had their territory and infrastructure hit by Iranian strikes earlier in the conflict because they host American forces. If Iran starts charging real fees long-term, the impact won’t be even across the region.
Analysts point out that Saudi Arabia and the UAE actually have alternative routes they could use to bypass the strait entirely if needed. Kuwait, Qatar, and Bahrain don’t have that luxury — geography leaves them with no real alternative. That means smaller Gulf states could end up forced into uncomfortable arrangements with Iran just to keep their shipping moving, which is exactly the kind of regional leverage Iran would want out of this situation.
What’s Actually Happening on the Water
Despite all the political noise, ships are still moving — just not at full capacity yet. US officials say commercial traffic has been picking up through a southern route near Oman, with around 25 ships a day currently, expected to rise to 40 or 50 fairly quickly. Officials have said they expect the strait to return to something resembling normal operations within roughly 30 days, partly because the US has already destroyed a significant number of Iranian mine-laying vessels that had been used to threaten the waterway.
Still, the backlog is enormous. Hundreds of merchant ships — a mix of oil tankers, bulk carriers, and container ships — remain stuck in the Persian Gulf waiting for the situation to stabilize fully.
What Comes Next
Top US officials including the Vice President are headed to Switzerland for talks with Iranian negotiators, alongside mediators from Pakistan and Qatar. The original 60-day window was meant to be spent negotiating the harder, unresolved issues — Iran’s nuclear program, sanctions relief, and the long-term future of the strait. Instead, the very first days of that window are being consumed by a dispute over Lebanon and dueling claims about who actually controls Hormuz.
The Bottom Line
This is the moment that shows how shaky this ceasefire really is. A deal signed just days ago is already being tested by a conflict it never actually covered. Iran is leveraging a waterway it may or may not fully control. Trump is threatening tolls he previously ruled out. And two countries that never signed anything — Israel and Hezbollah — are the ones whose actions could determine whether any of this holds together.
For now, oil is still moving, but barely, and everyone involved knows exactly how easily this could fall apart again.