Iran-US talks to continue through the night
Disagreement over key sticking points and the threat of renewed fighting in Lebanon weighed on the talks, with Washington and Tehran exchanging threats in parallel with the negotiations.
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BURGENSTOCK, Switzerland: The United States expects talks with Iran to continue through the night in Switzerland, a US diplomat told reporters early on Monday (Jun 22), as they work to permanently end the Middle East war.
The current round of negotiations got off to a rocky start, with the Islamic Republic's delegation walking out in response to US President Donald Trump's threats to strike Iran over its support for Hezbollah on Sunday.
A US diplomat at the Swiss venue told reporters the Iranian delegation was involved in "robust discussions on all elements of the nuclear deal", and gave clarifications on Iran's messaging on the Strait of Hormuz and "building deconfliction mechanisms to ensure the Strait will remain fully open".
The negotiations to end a war that sowed chaos across the region and rattled the global economy are meant to trigger a 60-day period to settle broader issues that have dogged US-Iranian relations for decades.
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But disagreement over key sticking points and the threat of renewed fighting in Lebanon weighed on the talks, with Washington and Tehran exchanging threats in parallel with the negotiations.
"The delegation of the Islamic Republic of Iran, after meeting with the Qatari delegation as one of the mediating parties, left the building where the negotiations were being held," Iran's state news agency IRNA said.
"At the same time as the talks began in Switzerland, Donald Trump published a message on X in which he repeated his threats and remarks against Iran," it added.
Trump had threatened to strike Iran if it did not "immediately stop their highly paid PROXIES in Lebanon from causing trouble".
Iran hit back with a warning of its own.
"They would do better to be careful with their statements; our armed forces are ready to respond to them in a different manner. No matter what they say, we are the ones who act", Iran's chief negotiator Mohammad Bagher Ghalibaf said.
"NEW LEAF?"
Israeli Prime Minister Benjamin Netanyahu meanwhile said troops would remain in south Lebanon "as long as necessary" and vowed that he would "not allow Iran to acquire nuclear weapons".
Iran's state broadcaster said the nuclear programme had not been discussed "during the 80-minute first round of talks" on Sunday.
It said the focus had been on the implementation of the memorandum of understanding between Tehran and Washington, and the situation in Lebanon.
US Vice President JD Vance had earlier hailed "a historic meeting".
Flanked by US negotiators Jared Kushner and Steve Witkoff in the luxury Swiss resort Burgenstock, Vance added: "The question before us now is how much more can we accomplish together?
"Can we turn over a new leaf? Can we change relations in the Middle East permanently?
"Or do we go back to doing things the old way, which is not our preference, but it's certainly very much something that can happen."
The talks to end the months-long conflict are taking place against the backdrop of Iran closing the strategic Strait of Hormuz again in response to recent Israeli attacks on Lebanon.
"It is not possible to enter the negotiation phase for a final agreement" unless there is an end to the war in Lebanon, Iranian foreign ministry spokesman Esmaeil Baqaei wrote on X.
Washington and Tehran's memorandum of understanding signed this week included a provision to end fighting in Lebanon between Israel and Hezbollah.
But there have been repeated clashes in Lebanon since, which prompted Iran to say it would again shutter the crucial oil and gas trade route, having opened it as part of the deal.
By Sunday evening, however, there had been no reports of Israeli strikes or continued fighting, with some residents of southern Lebanon cautiously trickling back to their homes.
STICKING POINTS
Lebanon aside, there has been no indication that Iran's support for armed groups across the region, which has long drawn the ire of the US and Israel, will be addressed in the negotiations.
Speaking on Sunday, Iranian President Masoud Pezeshkian said Tehran would not relinquish its right to enrich uranium, though he repeated Iran's denial that it wants nuclear weapons.
"We can also state in writing that we have no intention of building a bomb," he said.
The fighting between Israel and Hezbollah, sparked by the Tehran-backed militant group attacking Israel in support of Iran in the wider war, has repeatedly threatened to derail peace efforts.
On Friday, planned US-Iranian talks were postponed after Israel launched deadly strikes in Lebanon following the deaths of four of its soldiers in combat there.
Israel's military chief visited troops in south Lebanon on Sunday, where he said Hezbollah was in a "very difficult position".
"Hezbollah has suffered a severe and significant blow, and we are committed to remaining prepared to continue operating and prevent its rebuilding," Lieutenant General Eyal Zamir said.
The overall death toll from the fighting in Lebanon has now surpassed 4,100, the health ministry said.
Sean Yom, an associate professor of political science at Temple University, said a collapse in US-Iran talks could see a return of missile strikes, drone attacks and other retaliatory military actions between Washington and Tehran.
"If the talks fail, then war will resume, perhaps not in full-scale fashion," he told CNA's Asia First. "More importantly, beyond the military chess board, the Hormuz Strait will be effectively closed once more.
"That is going to be, I think, quite catastrophic to the global economy, to global energy markets, as well as global commercial shipping traffic in certain commodity sectors such as petrochemicals and fertilisers."
But Yom, who is also a senior fellow at non-profit organisation Democracy for the Arab World Now (DAWN), believes this is not the most likely outcome, as the Trump administration faces strong domestic pressure to keep energy prices and inflation under control.
He suggested Iran's decision to walk away from negotiations was a calculated move.
"The Iranian regime understands that President Trump, given both immense global pressure and domestic political pressure – with the midterm elections in November, and rising inflation and consumer costs at home – will likely cave in and put subsequent pressure on Israel to dampen down the intensity of its conflict in Lebanon, and perhaps give further concessions to Iran as the 60-day period of negotiations proceeds until its conclusion," he added.
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