High-stakes talks between the United States and Iran were abruptly called off on Friday following a heavy escalation in fighting between Israel and Hezbollah in southern Lebanon, according to three officials. The postponement casts a shadow over a nascent diplomatic agreement aimed at permanently ending the war with Iran.
Iranian delegates canceled their scheduled travel to Switzerland, maintaining that hostilities in Lebanon must cease before negotiations can proceed. US Vice President JD Vance also canceled his planned trip to the summit. Mediators are currently scrambling to reschedule the meetings, which are intended to address restrictions on Iran’s nuclear program, the core catalyst behind the outbreak of the war on Feb. 28.
The flare-up underscores the fragility of the peace process. While neither Israel nor Hezbollah are signatories to the US–Iran accord, the deal hinges on a cessation of their border conflict. Overnight Israeli airstrikes in southern and eastern Lebanon left at least 21 people dead, according to Lebanon’s Health Ministry, while Israel reported the deaths of four soldiers amid intense ground fighting.
The diplomatic pause comes as the interim deal successfully reopened the strategic Strait of Hormuz to international shipping, restoring energy flows that had been paralyzed by prior Iranian attacks.
