A ceasefire framework and competing claims over nuclear inspections test a fragile agreement
The Strait of Hormuz is open again, oil is moving and diplomats are talking. But beneath the surface of what looks like a breakthrough between the United States and Iran, a dispute over nuclear inspections is already threatening to complicate a peace framework that both sides have publicly committed to, at least in principle.
Iran and the U.S. at the negotiating table
Delegations from both countries convened over the weekend at a resort in Switzerland, entering formal negotiations aimed at converting a recently signed memorandum of understanding into a durable war-ending agreement. The talks follow a military campaign that began in late February when the U.S. and Israel launched coordinated strikes targeting Iranian military, government and infrastructure sites.
Vice President JD Vance, who attended the early rounds of negotiations, left Switzerland projecting confidence. He described progress on two fronts: a mechanism to keep the Strait of Hormuz open and a regional ceasefire framework designed to manage tensions as they inevitably arise. He also confirmed that Iran had agreed to allow international nuclear inspectors back into the country, calling it a significant milestone in the broader effort to end any Iranian nuclear weapons ambitions permanently.
Trump announces end of naval blockade
President Trump announced on social media that he had agreed to lift the naval blockade of the Strait of Hormuz, citing what he described as Iran’s full agreement to allow the highest level of nuclear inspections for an extended period. He framed the concession as conditional, making clear that naval assets remain in position and that the blockade could be reinstated if Iran fails to follow through.
Trump’s announcement came alongside a waiver on Iranian oil sales, formalizing a promise contained in the memorandum of understanding. The waiver, effective for 60 days beginning Monday, legalizes transactions involving previously sanctioned vessels and permits payments for Iranian crude oil to be made in U.S. dollars. The waiver does not extend to buyers in North Korea, Cuba or Russian-controlled territories.
Iran pushes back on inspection claims
The optimism from the American side ran almost immediately into a contradictory statement from Tehran. Iran’s Foreign Ministry said the country has no plans to allow international inspectors access to sites that sustained damage during the war, arguing that no established protocol exists for such a situation. Iranian officials also confirmed that their delegation in Switzerland did not meet with the head of the International Atomic Energy Agency during the talks.
The disconnect left both sides publicly committed to an agreement whose terms they appear to interpret differently, a tension that negotiators will need to resolve before the framework can hold.
Shipping rebounds as confidence returns
On the water, the impact of the ceasefire framework was immediate and measurable. Confirmed vessel crossings through the Strait of Hormuz nearly tripled in a single week following the signing of the memorandum, jumping from 32 crossings over a three-day period to 93 over a comparable window the following week. The single sharpest daily increase came on a Saturday, when crossings rose from 3 to 42 compared to the same day the previous weekend.
The International Maritime Organization announced an evacuation plan for more than 11,000 seafarers who had been stranded in the region, stating that safety guarantees had been secured and conditions verified for safe navigation. The operation is being carried out in coordination with Iran, Oman, the United States and other coastal states in the region.
Diplomatic activity widens
Beyond the Swiss talks, Secretary of State Marco Rubio is scheduled to visit the United Arab Emirates, Kuwait and Bahrain this week, his first regional trip since the conflict began. Separately, talks between Israeli and Lebanese representatives are set to take place in Washington over three days, following calls between Rubio and both the Lebanese president and Israeli Prime Minister Benjamin Netanyahu aimed at solidifying a ceasefire and setting the terms for future negotiations. Netanyahu confirmed that Israeli forces would remain in a security zone in southern Lebanon for as long as deemed necessary.
The peace framework is taking shape. Whether the details can be made to match the announcements is the question that will define what comes next.