A 14-point peace deal signed just days ago is already being tested, as Lebanon fighting threatens to unravel it before talks even begin in the Swiss Alps
The ink on the U.S.-Iran peace deal is barely dry, and already it’s being put through its first real stress test. Iran says it has closed the Strait of Hormuz again. The United States says that’s simply not true. And both delegations are now heading to a luxury resort in the Swiss mountains to figure out whether the fragile truce signed at Versailles just days ago can actually hold.
Iran’s joint military command announced Saturday that the Strait of Hormuz has been closed to vessel traffic, citing what it called the United States’ “clear breach of its commitments” and continued Israeli military action in Lebanon. The U.S. Central Command flatly denied the claim, saying 55 commercial vessels carrying more than 17 million barrels of oil transited the strait on Saturday alone — and that American forces remain “present and vigilant” to keep it that way.
Why Iran Says It’s Closing the Strait — Again
This isn’t really about Hormuz at its core. It’s about Lebanon.
The 14-point memorandum of understanding signed earlier this week by Iranian President Masoud Pezeshkian and President Trump opened with a clause calling for the immediate and permanent end of military operations on all fronts — explicitly including Lebanon. Iran’s military command said that clause has been violated, pointing to continued fighting between Israel and the Iran-backed militant group Hezbollah in southern Lebanon, even after a fresh ceasefire was announced there Friday.
The IRGC Navy broadcast warnings to vessels Saturday telling them to “absolutely refrain from any movement in the Strait of Hormuz until further notice.” A statement from Iran’s Khatam-al Anbiya Central Headquarters made the strategy explicit: this is a first step, and “if the aggression continues, further steps will be planned and taken to force the enemy to comply with its obligations.”
In plain terms — Iran is using the strait as leverage to force a real ceasefire in Lebanon, not just a paper one.
The US Says None of This Is Actually Happening
Washington’s response was blunt and immediate. “Iran does not control the Strait of Hormuz,” CENTCOM spokesperson Captain Tim Hawkins said. “Traffic continues to flow, and U.S. forces are monitoring the situation to ensure this remains the case.”
The numbers Hawkins cited were specific — 55 merchant ships, more than 17 million barrels of oil, moving through the strait Saturday without interruption. Vice President JD Vance backed that up on Fox News, calling the volume “a record going back to even before the conflict started,” and adding that negotiations on the harder issues — like locking down Iran’s enriched uranium stockpile — were “going well.”
It’s a strange split-screen moment: one side declaring a major shipping lane closed, the other publishing tanker counts to prove it’s busier than ever.
Lebanon Is the Real Fire Still Burning
While the Hormuz dispute grabs headlines, the situation in southern Lebanon is where the actual danger sits. Israeli strikes overnight Saturday killed more than a dozen people, including two children, just hours after a new ceasefire between Israel and Hezbollah had reportedly been reached. Hezbollah, for its part, said it fired roughly 50 projectiles at Israeli troops, and Israel reported five of its soldiers killed over the preceding 48 hours.
An Iranian official told reporters that Lebanon is “the number one issue” for Tehran’s delegation heading into Switzerland, and that Iran does not consider the next phase of negotiations to have truly started until that issue is resolved. Iran’s Foreign Ministry spokesperson Esmail Baghaei went further, warning that if key commitments aren’t upheld, “the memorandum of understanding as a whole will be jeopardized.”
That’s about as direct a warning as diplomacy gets.
Switzerland: Where the Next Round Plays Out
Talks were originally meant to begin Friday, but Iran pulled out over the Lebanon fighting before mediators — including Pakistan’s Prime Minister Shehbaz Sharif, who personally traveled to Tehran to persuade Iranian negotiators to reconsider — managed to get both sides back to the table.
Technical-level talks are now set to begin Sunday at the Bürgenstock Resort, a luxury property overlooking Lake Lucerne and the Swiss Alps that’s been closed to the public since June 17 specifically to host these negotiations. Leading the U.S. side are special envoy Steve Witkoff and Jared Kushner, with Vance joining shortly after, saying he can stay for “a day or two.” Iran’s delegation is led by Parliament Speaker Mohammad Bagher Ghalibaf, alongside Foreign Minister Abbas Araghchi and central bank and oil officials.
Pakistan and Qatar are both participating as mediators — a continuation of the role Pakistan has played since the ceasefire process first began.
Trump’s Toll Threat Adds Another Layer
In the middle of all this, President Trump used the moment to draw his own line in the sand. In a Saturday social media post, he said there would be “NO TOLLS in the Hormuz Strait for 60 days during the Cease Fire Period,” and “NO TOLLS after the 60 day period has expired” — unless the United States itself imposes them, should a final deal not be completed, for what he called “services rendered as the Guardian Angel to the countries of the Middle East.”
It’s a pointed reminder that the current 60-day window, agreed to in this week’s MoU, isn’t open-ended. Both sides know the clock is running, and now they’re testing exactly how much pressure the other can absorb before that window closes.
What’s Actually at Stake Here
This dispute lands directly on top of the economic relief we’ve already started to see ripple out from the peace deal — cheaper fuel in countries like Pakistan, reopening shipping lanes, the early signs of a post-war economic recovery across the region. Nearly a fifth of the world’s oil moves through the Strait of Hormuz. Even a contested, partial disruption sends a chill through global energy markets.
Whether Iran’s closure claim is real, symbolic, or somewhere in between may matter less than what it reveals: barely a week after the historic Versailles signing, the underlying tensions that caused four months of war haven’t disappeared. They’ve just moved into the negotiating room.
Sunday’s talks in Bürgenstock will be the first real test of whether this peace deal can survive contact with reality — or whether Lebanon becomes the fault line that breaks it.