Iran said Sunday that the Strait of Hormuz will remain closed until the Lebanon ceasefire is respected and waivers allowing the sale of Iranian oil are issued, raising new pressure on the Trump administration as negotiators try to keep a fragile regional deal from breaking down. Tehran’s position was relayed by Tasnim, which cited a source close to Iran’s negotiating team.
The claim immediately deepened uncertainty around one of the world’s most important energy chokepoints. The Strait of Hormuz carries a large share of globally traded oil, and any sustained disruption would put fresh pressure on shipping, insurance costs and energy markets. The political dispute is now centered not only on maritime access, but also on whether the Lebanon ceasefire is real enough for Iran to treat the interim agreement as still intact.
Strait of Hormuz closure tied to Lebanon ceasefire
Iran’s stated position is straightforward: the waterway will not reopen unless the Lebanon truce holds. Tasnim said the strait would remain closed as long as the ceasefire in Lebanon was not respected. It also said the route would stay shut until waivers are issued allowing Iranian oil sales.
That puts two conditions at the center of the dispute. The first is security: Iran is tying Hormuz access to a halt in fighting between Israel and Hezbollah. The second is economic: Tehran wants practical relief that allows it to sell oil, not only diplomatic language about future negotiations. Those demands complicate the White House effort to present the interim deal as a stabilizing breakthrough.
The broader talks are already under strain. U.S. and Iranian delegations met in Switzerland under the interim memorandum signed a week earlier, but the Hormuz dispute and the Lebanon fighting have overshadowed any attempt to move quickly into deeper nuclear negotiations.
U.S. says ships are still moving
Washington is rejecting Iran’s claim in practical terms. U.S. Central Command said commercial traffic through the strait continued and that 55 merchant ships transited the waterway on Saturday carrying cargo and more than 17 million barrels of oil. AP separately reported that U.S. Energy Secretary Chris Wright said 67 ships passed through in the previous 24 hours, underscoring that the U.S. position is that maritime traffic has not stopped.
That leaves the central dispute unresolved. Iran says Hormuz is closed again. The U.S. military says commercial vessels are still passing through the route. For shipowners and insurers, the question is less about rhetoric than whether passage can continue safely under military monitoring and Iranian pressure.
The tension also exposes the weakness of the interim agreement. Tehran is using control over access and permits as leverage, while Washington is using military presence and diplomatic talks to show the route remains open. The result is a standoff in which both sides are making claims meant to shape markets and negotiations at the same time.
Oil waivers add a second pressure point
Iran’s demand for oil waivers is more than a side condition. By saying the strait will remain closed until waivers for Iranian oil sales are issued, Tehran is linking maritime access to sanctions relief and export revenue. That creates a direct economic test for the Trump administration, which is trying to preserve leverage over Iran’s nuclear program while avoiding another oil shock.
The issue matters because the interim agreement was supposed to lower tensions and restore confidence in Gulf shipping. Instead, Iran is signaling that it wants visible economic gains before returning to normal passage. That could force Washington to decide whether limited concessions are worth securing more stable traffic through Hormuz.
At the same time, Trump has taken a harder public line. He warned Iran over activity by Hezbollah-linked forces in Lebanon and threatened to hit Iran again if it did not rein in its proxies. That language may strengthen his position domestically, but it also makes it harder for negotiators to present any oil waivers or sanctions-related relief as a straightforward technical step.
Lebanon truce remains fragile
Iran’s leverage works only because the Lebanon ceasefire is still shaky. Hezbollah chief Naim Qassem said the group would respond to any violation by Israel, while Israeli Defence Minister Israel Katz said Israeli troops in Lebanon are free to act if they are under threat. Those positions leave plenty of room for renewed clashes even after the truce took effect.
The ceasefire has nonetheless held well enough to create a temporary lull. Reuters reported that the latest stretch marked the longest period without major violence since the fighting began on March 2, even though the truce remains conditional and easily reversible. Hezbollah says it has carried out no operations since the deal, while Israel insists its forces can still defend themselves and maintain a security zone in southern Lebanon.
That gives both sides a different reading of compliance. Iran and Hezbollah argue that Israeli operations inside Lebanon undermine the deal. Israel argues it cannot give up freedom of action while Hezbollah remains armed near the border. That disagreement is now feeding directly into the status of the Strait of Hormuz.
Switzerland talks face a harder path
The diplomacy now looks narrower than it did just days ago. The Swiss talks were supposed to help turn the interim deal into a broader framework covering nuclear issues, sanctions and regional tensions. Instead, the negotiations are now dominated by the immediate questions of Lebanon enforcement and maritime access.
Vice President JD Vance has taken the lead for the U.S. side, while Iran’s team includes top political and diplomatic figures. But with Tehran insisting that Lebanon comes first and with Hormuz being used as leverage, the path toward a wider agreement is becoming harder to sell as a clean diplomatic success.
The confirmed development for now is not a universally recognized physical shutdown of the strait. It is that Iran says Hormuz will stay closed until the Lebanon ceasefire holds and oil waivers are granted, while the United States says vessels are still moving through the waterway under close monitoring. That gap between political claims and operational reality is likely to define the next phase of the crisis.
