Iran's top joint military command, Khatam al-Anbiya Central Headquarters, announced the closure of the Strait of Hormuz to vessel traffic on Saturday. Tehran cited alleged breaches of a ceasefire agreement by the United States and Israel, specifically pointing to continued Israeli military operations and fresh strikes in southern Lebanon. Iran described the closure as a first step in response to these violations and warned that further measures would be taken if aggression continues.
Despite the closure, Iranian and U.S. negotiators are traveling to Bürgenstock, Switzerland, for technical-level talks scheduled to begin Sunday. The meetings aim to add key details to an interim agreement signed by U.S. President Donald Trump and Iranian President Masoud Pezeshkian to halt the wider regional war on all fronts. U.S. Vice President JD Vance, who is en route to the talks, expressed hope for progress on the nuclear issue and the Lebanon ceasefire.
Tehran warned that the Swiss negotiations are unlikely to advance unless the fighting in Lebanon stops, asserting that the trip is about demanding the other side fulfill its obligations. The fragility of the Lebanon truce is evident as Israeli forces and Hezbollah continue to attack each other. Meanwhile, President Trump stated that no toll will be charged for passage through the strait during or after the 60-day interim ceasefire, unless the U.S. imposes one should peace talks fail.