Iran's Team Walks Out of Switzerland Talks After Trump Threat

The first round of U.S.–Iran talks in Switzerland broke up within hours on Sunday, after President Donald Trump threatened fresh military strikes and Iran's delegation left the room. How permanent that walkout is depends on whom you ask.

Iran's Tasnim news agency, citing a source close to the negotiating team, reported that the Iranian delegation walked out in protest after Trump warned he would resume attacks on Iran unless the Strait of Hormuz stayed open and Tehran reined in what he called its "highly paid proxies" in Lebanon. According to the same report, the Iranian team had already declined to join a group photo with the Americans, and Parliament Speaker Mohammad-Bagher Ghalibaf, who led the delegation, refused to enter the room for the closing press conference.

Yet the picture coming out of the Bürgenstock resort was contested almost immediately. Bloomberg, citing Iran's Fars agency, reported that Trump's threat had halted the discussions. An Iranian source told Reuters the talks were paused, not ended, after a first session of roughly 80 minutes — and people familiar with the meeting said the negotiations were in fact still going, despite the Iranian media reports of a walkout.

This was supposed to be the careful part. The Bürgenstock meeting was a quadrilateral affair — the United States and Iran in the room, with Pakistan and Qatar mediating — meant to steady a fragile ceasefire and open a 60-day window to negotiate the future of Iran's nuclear program. It opened on a note of choreographed optimism.

"We are witnessing a great day that will lead to world peace. We thank Trump for his active vision that led to direct negotiations."

Pakistani Prime Minister Shehbaz Sharif, at the opening of the talks

U.S. Vice President JD Vance, who led the American side alongside envoy Steve Witkoff and Jared Kushner, struck the same tone, saying Trump had asked the delegations to "turn over a new leaf." Qatar's prime minister and foreign minister, Sheikh Mohammed bin Abdulrahman Al Thani, called the session "just the beginning of the process." That was before Trump's threat, delivered publicly while his own vice president was mid-negotiation, scrambled the room.

For the people who actually live along the Strait of Hormuz and the Lebanese border, the stakes are less abstract than the diplomacy suggests. Roughly a fifth of the world's oil moves through Hormuz; a closure, or the threat of one, ripples into fuel prices far from the Gulf. An emergency session on the fighting in Lebanon, where Israel and Iran-backed Hezbollah have traded fire, had already been bolted onto the Swiss agenda before the delegations sat down.

Post by @mb_ghalibaf

Ghalibaf, posting on X as the day unraveled, was unbowed, dismissing Washington's threats and warning the Americans to "watch their statements." It was the opposite of the language coming from the mediators, and a reminder that the two delegations walked into Switzerland carrying very different ideas of what leverage looks like.

The talks pick up where the delegations first convened earlier Sunday, and the gap between "paused" and "collapsed" is the whole game now. A pause can be reframed by Monday as a negotiating tactic; a collapse hands every hardliner in Tehran and Washington a reason to say diplomacy was never serious. As of Sunday night, neither side had closed the door — they had only made sure the other knew where it was.