U.S. and Iranian negotiators are in Switzerland on Sunday for talks on working out key details of their interim agreement to end the Iran war.
A team led by U.S. Vice President JD Vance, including Jared Kushner and Steve Witkoff, is to meet with Iranian negotiators led by parliamentary Speaker Mohammad Bagher Qalibaf and Foreign Minister Abbas Araghchi.
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U.S. Vice President JD Vance waits, alongside U.S. President Donald Trump's envoys Steve Witkoff, second right, and Jared Kushner, right, to meet with Pakistan's Prime Minister Shehbaz Sharif for high-level talks aimed at advancing a deal to end the Middle East conflict, at the Bürgenstock Resort in Obbuergen, near Lucerne, in Switzerland, Sunday, June 21, 2026. (Nathan Howard/Pool Photo via AP)
Flags of the U.S., Qatar, Iran, Pakistan, Nidwalden and Switzerland, from left, are seen at the Buergenstock resort in Obbuergen, near Lucerne, Switzerland, Sunday, June 21, 2026. (Urs Flueeler/Keystone Pool via AP)
Iranian Foreign Minister Seyyed Abbas Araghchi, center, and Speaker of the Islamic Parliament of Iran Mohammed Bagher Ghalibaf, left, arrive at the Buergenstock resort in Obbuergen, near Lucerne, Switzerland, early Sunday, June 21, 2026. (Urs Flueeler/Keystone, Pool via AP)
U.S. Vice President JD Vance, right, meets with Pakistan's Prime Minister Shehbaz Sharif, during high-level talks aimed at advancing a deal to end the Middle East conflict, at the Bürgenstock Resort in Obbuergen, near Lucerne, in Switzerland, Sunday, June 21, 2026. (Nathan Howard/Pool Photo via AP)
U.S. Vice President JD Vance waits, alongside U.S. President Donald Trump's envoys Steve Witkoff, second right, and Jared Kushner, right, to meet with Pakistan's Prime Minister Shehbaz Sharif for high-level talks aimed at advancing a deal to end the Middle East conflict, at the Bürgenstock Resort in Obbuergen, near Lucerne, in Switzerland, Sunday, June 21, 2026. (Nathan Howard/Pool Photo via AP)
Flags of the U.S., Qatar, Iran, Pakistan, Nidwalden and Switzerland, from left, are seen at the Buergenstock resort in Obbuergen, near Lucerne, Switzerland, Sunday, June 21, 2026. (Urs Flueeler/Keystone Pool via AP)
U.S. Vice President JD Vance, gestures as he meets with Pakistan's Prime Minister Shehbaz Sharif, during high-level talks aimed at advancing a deal to end the Middle East conflict, at the Bürgenstock Resort in Obbuergen, near Lucerne, in Switzerland, Sunday, June 21, 2026. (Nathan Howard/Pool Photo via AP)
Vice President JD Vance speaks to reporters at Joint Base Andrews, Md., Saturday, June 20, 2026, en route to Switzerland. (Elizabeth Frantz/Pool Photo via AP)
Vice President JD Vance, center, and second lady Usha Vance, left, walk from Marine Two as they arrive at Joint Base Andrews, Md., Saturday, June 20, 2026, en route to Switzerland. (Elizabeth Frantz/Pool Photo via AP)
Speaker of the Islamic Parliament of Iran Mohammed Bagher Ghalibaf, center, arrives at the Buergenstock resort in Obbuergen, near Lucerne, Switzerland, early Sunday, June 21, 2026. (Urs Flueeler/Keystone, Pool via AP)
Iranian Foreign Minister Seyyed Abbas Araghchi, center, arrives at the Buergenstock resort in Obbuergen, near Lucerne, Switzerland, early Sunday, June 21, 2026. (Urs Flueeler/Keystone, Pool via AP)
Iranian Foreign Minister Seyyed Abbas Araghchi, center, and Speaker of the Islamic Parliament of Iran Mohammed Bagher Ghalibaf, left, arrive at the Buergenstock resort in Obbuergen, near Lucerne, Switzerland, early Sunday, June 21, 2026. (Urs Flueeler/Keystone, Pool via AP)
Pakistani envoys are also in place, as well as Qatari mediators, for the technical-level discussions to end the conflict that began in late February.
Vance said he was optimistic about making progress in talks about Iran’s nuclear program and a ceasefire in southern Lebanon.
On the eve of the talks, Tehran announced it has closed the Strait of Hormuz again over Israel’s ongoing military campaign in Lebanon. The interim deal between the U.S. and Iran is meant to stop fighting on all fronts, including Lebanon, as well as calling for billions of dollars of Iran’s assets to be unfrozen.
U.S. President Donald Trump has threatened to impose American tolls in the strait if a final deal with Iran isn’t reached in 60 days. The interim agreement calls for toll-free travel for 60 days in the waterway that is vital for the world's oil supply.
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Rafael Grossi, chief of the U.N. nuclear watchdog — the International Atomic Energy Agency — met with Swiss Foreign Minister Ignazio Cassis on the sidelines of the gathering at the picturesque mountainside resort near Lake Lucerne on Sunday morning.
The agency had monitored the 2015 nuclear deal negotiated between the U.S. and Iran under the Obama administration.
Trump in 2018 withdrew the U.S. from that agreement.
Iran's Foreign Ministry spokesman Esmail Baghaei says Tehran will mainly focus during the talks on Sunday on the ongoing fighting in Lebanon.
Tehran insists that the deal’s implementation start with a cessation of all fighting — including between Israel and Hezbollah.
Baghaei said the U.S. “has been unable or unwilling” to hold Israel to the ceasefire.
Iran will meet in the morning with Pakistani and Qatari mediators, and in the afternoon, there will be a four-way meeting including the U.S. negotiating team. There is currently only one day of negotiations planned, Baghaei told the state news agency.
“The implementation of any document is more important than its signing,” Baghaei also said Sunday.
Iran’s president has said that Iran will maintain its right to a nuclear program.
“What is certain is that we will never back down from the right to enrich uranium, and the other side is also forced to accept it,” Masoud Pezeshkian said on Sunday, according to state media.
As the U.S.-Iran talks were to kick off in Switzerland, a ceasefire appears to be holding in Lebanon, a lull that came after another day of heavy fighting.
Lebanon’s Health Ministry reported over 50 killed in Israeli strikes since the deal was signed on Thursday. Five Israeli soldiers were also killed.
Israel says it targeted Hezbollah infrastructure on Saturday, including a tunnel network in the southern Lebanese town of Kfar Tebnit.
But by Sunday morning, residents in southern Lebanon reported a lull in Israeli strikes. There also were no reports of Hezbollah fire from the Israeli side.
Israel’s military has received instructions to uphold the ceasefire, and said it is only acting defensively, according to an Israeli military official who spoke on condition of anonymity in line with military guidelines.
—Melanie Lidman in Tel Aviv, Israel
Pakistani Prime Minister Shehbaz Sharif and army chief Field Marshal Asim Munir are also in Switzerland for the high-level U.S.-Iran talks, the prime minister's office said without providing further details.
The technical-level talks at Bürgenstock Resort near the Swiss city of Lucerne are being held after Sharif dispatched his special envoy, Interior Minister Mohsin Naqvi, to Tehran to persuade Iranian authorities to send a delegation to Switzerland. The meeting was originally scheduled for Friday but was delayed because of concerns raised by Iran.
Naqvi later informed Islamabad that Iran was willing to attend the talks. Pakistan subsequently conveyed the development to Washington.
The strait has emerged as a key focus, with Iran’s joint military command saying on Saturday that it was closed again because of the U.S. “clear breach of its commitments” by failing to end the war. The interim deal is meant to stop fighting on all fronts, including in Lebanon where Israeli forces are battling the militant Hezbollah group.
The U.S. disputed Iran’s announcement, with the U.S. Central Command saying that traffic continues to flow and that 55 merchant ships transited on Saturday with more than 17 million barrels of oil.
Ships began transiting after the interim U.S.-Iran agreement was signed last week. The U.S. lifted its blockade of Iran’s ports and now allows Tehran to sell its oil freely — terms that have left some in U.S. Congress asking whether the war was worth it.
The interim deal signed by Trump and Iranian President Masoud Pezeshkian gives negotiators 60 days to reach a nuclear agreement, but the time can be extended.
U.S. Vice President JD Vance, right, meets with Pakistan's Prime Minister Shehbaz Sharif, during high-level talks aimed at advancing a deal to end the Middle East conflict, at the Bürgenstock Resort in Obbuergen, near Lucerne, in Switzerland, Sunday, June 21, 2026. (Nathan Howard/Pool Photo via AP)
U.S. Vice President JD Vance waits, alongside U.S. President Donald Trump's envoys Steve Witkoff, second right, and Jared Kushner, right, to meet with Pakistan's Prime Minister Shehbaz Sharif for high-level talks aimed at advancing a deal to end the Middle East conflict, at the Bürgenstock Resort in Obbuergen, near Lucerne, in Switzerland, Sunday, June 21, 2026. (Nathan Howard/Pool Photo via AP)
Flags of the U.S., Qatar, Iran, Pakistan, Nidwalden and Switzerland, from left, are seen at the Buergenstock resort in Obbuergen, near Lucerne, Switzerland, Sunday, June 21, 2026. (Urs Flueeler/Keystone Pool via AP)
U.S. Vice President JD Vance, gestures as he meets with Pakistan's Prime Minister Shehbaz Sharif, during high-level talks aimed at advancing a deal to end the Middle East conflict, at the Bürgenstock Resort in Obbuergen, near Lucerne, in Switzerland, Sunday, June 21, 2026. (Nathan Howard/Pool Photo via AP)
Vice President JD Vance speaks to reporters at Joint Base Andrews, Md., Saturday, June 20, 2026, en route to Switzerland. (Elizabeth Frantz/Pool Photo via AP)
Vice President JD Vance, center, and second lady Usha Vance, left, walk from Marine Two as they arrive at Joint Base Andrews, Md., Saturday, June 20, 2026, en route to Switzerland. (Elizabeth Frantz/Pool Photo via AP)
Speaker of the Islamic Parliament of Iran Mohammed Bagher Ghalibaf, center, arrives at the Buergenstock resort in Obbuergen, near Lucerne, Switzerland, early Sunday, June 21, 2026. (Urs Flueeler/Keystone, Pool via AP)
Iranian Foreign Minister Seyyed Abbas Araghchi, center, arrives at the Buergenstock resort in Obbuergen, near Lucerne, Switzerland, early Sunday, June 21, 2026. (Urs Flueeler/Keystone, Pool via AP)
Iranian Foreign Minister Seyyed Abbas Araghchi, center, and Speaker of the Islamic Parliament of Iran Mohammed Bagher Ghalibaf, left, arrive at the Buergenstock resort in Obbuergen, near Lucerne, Switzerland, early Sunday, June 21, 2026. (Urs Flueeler/Keystone, Pool via AP)
OBBUERGEN, Switzerland (AP) — U.S. Vice President JD Vance and senior Iranian officials arrived in Switzerland on Sunday to formally launch negotiations over Tehran’s nuclear program and build out the fragile interim deal to end the war in Iran.
The framework was signed last week, and now top U.S. and Iranian negotiators are in a 60-day sprint to reach an agreement on the technical details that hold massive implications for the world economy and global security.
Yet only days after signing the agreement, it’s being stress-tested after fighting escalated in Lebanon between Israel and the Iranian-backed militant group Hezbollah — and by the subsequent announcement by Iran’s military that it had closed the Strait of Hormuz, the vital waterway that transits a fifth of the world’s traded oil and natural gas.
Vance first sat down for talks with Pakistani Prime Minister Shehbaz Sharif and Staff Field Marshall Asim Munir, who has served as a key intermediary between the United States and Iran throughout the conflict.
“What’s up man! Good to see you,” Vance said as he warmly greeted Munir, who serves as his country's army chief.
Mediators from Qatar were also on hand at the picturesque mountainside resort near Lake Lucerne on Sunday morning.
Rafael Grossi, chief of the U.N. nuclear watchdog — the International Atomic Energy Agency — met with Swiss Foreign Minister Ignazio Cassis on the sidelines of the gathering.
The agency had monitored the 2015 nuclear deal negotiated between the U.S. and Iran under the Obama administration. Trump in 2018 withdrew the U.S. from the agreement.
Iran’s main focus during negotiations on Sunday will be the ongoing war between Israel and Lebanon, Iranian Foreign Ministry spokesman Esmail Baghaei told Iran’s state news agency on Sunday.
Iran is insisting that the deal’s implementation start with the part of the deal that calls for a cessation of all wars, including between Israel and Hezbollah. Baghaei said the U.S. “has been unable or unwilling” to hold Israel to the ceasefire.
Iranian officials were to hold their own meetings with Pakistani and Qatari mediators before a planned four-way meeting including the U.S. negotiating team.
Iran is cautiously approaching the negotiations given its previous experience with the U.S. negotiations on the nuclear issue, which twice in the past year have been interrupted by massive strikes against the country. “The implementation of any document is more important than its signing,” Baghaei said Sunday.
But Iran’s president added that Iran will maintain its right to a nuclear program.
“What is certain is that we will never back down from the right to enrich uranium, and the other side is also forced to accept it,” Iranian President Masoud Pezeshkian said on Sunday, according to Iran’s state media.
Vance had originally been slated to be on the ground at the picturesque Bürgenstock resort near Lucerne on Friday, but his departure from the United States was delayed after fighting escalated in Lebanon and Iranian officials canceled plans to attend the talks.
U.S. Central Command disputed Iran’s claim that it had once again shuttered the strait and said U.S. forces continued to monitor the situation to ensure traffic continues to flow through the waterway. Vance has said that millions of barrels of oil have moved through the strait in recent days.
Vance departed the U.S. just after Iranian state TV said Iran’s negotiators had arrived in Switzerland. Tehran’s negotiators include parliamentary speaker Mohammad Bagher Qalibaf and Foreign Minister Abbas Araghchi, along with central bank and oil officials.
The vice president by special envoy Steve Witkoff and Jared Kushner, President Donald Trump's son-in-law, for Sunday's talks. Witkoff and Kushner were the ground in Switzerland ahead of Vance to begin sifting through the technical details of the nuclear talks.
Vance and his wife, second lady Usha Vance, arrived at Emmen Air Base outside Lucerne just before 6 a.m. local time, according to his office.
While Vance said he planned to be in Switzerland for just “a day or two,” leaving much of the detailed negotiations to be spearheaded by Witkoff and Kushner, his role in the talks has heightened scrutiny of the vice president at a time when he’s actively considering a 2028 presidential campaign.
Trump and Vance have come under searing criticism from parts of their own party for the deal, with Republican hard-liners unfavorably likening it to a nuclear agreement signed by the Obama administration that Trump and the GOP have insisted did nothing to actually terminate Iran’s nuclear program.
The agreement signed by Trump and Iranian President Pezeshkian immediately allows Tehran to sell its oil freely and paves the way for Iran to tap into billions of dollars in assets that are currently frozen. It also calls for Iran to dilute its stockpile of highly enriched uranium, believed to be buried under nuclear sites that were targeted in U.S. strikes last summer.
The agreement says commercial vessels can pass through the Strait of Hormuz for 60 days without a charge, but does not preclude future fees imposed by Iran. Trump made his own threat on Saturday to levy U.S. tolls on the strait if there is no deal with Iran in 60 days, insisting in a social media post that the money would be for “services rendered as the Guardian Angel to the countries of the Middle East.”
The Trump administration has been working to reassure global markets that the Iran war has been merely a blip on oil prices, as Americans have complained the conflict resulted in hiking gasoline prices ahead of peak summer travel months. After the White House announced the deal a week ago, oil futures dropped almost 8% — and markets are expected to closely track the progress of talks when they open for trading on Sunday evening.
Further complicating matters, neither Israel nor Hezbollah is a signatory to the deal between the U.S. and Iran, and Israeli Prime Minister Benjamin Netanyahu has vowed to keep his forces in southern Lebanon until any threat to Israel is eliminated. Hezbollah has refused to halt its attacks unless Israel commits to withdrawing from Lebanon.
Fighting between Israel and Hezbollah in the initial days after the agreement between the U.S. and Iran killed 47 people in Lebanon, as well as four Israeli soldiers.
Kim reported from Washington. Associated Press writers Munir Ahmed in Islamabad, Amir Vahdat in Tehran, Iran, and Melanie Lidman in Tel Aviv, Israel, contributed to this report.
U.S. Vice President JD Vance, left, reacts next to U.S. President Donald Trump's envoys Steve Witkoff, second right, and Jared Kushner, right, while waiting to meet with Pakistan's Prime Minister Shehbaz Sharif for high-level talks aimed at advancing a deal to end the Middle East conflict, at the Bürgenstock Resort in Obbuergen, near Lucerne, in Switzerland, Sunday, June 21, 2026. (Nathan Howard/Pool Photo via AP)
U.S. Vice President JD Vance, left, reacts next to U.S. President Donald Trump's envoys Steve Witkoff, second right, and Jared Kushner, right, while waiting to meet with Pakistan's Prime Minister Shehbaz Sharif for high-level talks aimed at advancing a deal to end the Middle East conflict, at the Bürgenstock Resort in Obbuergen, near Lucerne, in Switzerland, Sunday, June 21, 2026. (Nathan Howard/Pool Photo via AP)
Iran’s Foreign Minister Abbas Araghchi, left, and Switzerland's Foreign Minister Federal councillor Ignazio Cassis, right, shake hands at bilateral discussions at the Buergenstock resort in Obbuergen, near Lucerne, Switzerland, Sunday, June 21, 2026. (Urs Flueeler/Keystone via AP)
A Swiss Army Helicopter flies around the Buergenstock resort in Obbuergen, near Lucerne, Switzerland, Sunday, June 21, 2026. (Urs Flueeler/Keystone Pool via AP)
U.S. Vice President JD Vance, right, meets with Pakistan's Prime Minister Shehbaz Sharif, during high-level talks aimed at advancing a deal to end the Middle East conflict, at the Bürgenstock Resort in Obbuergen, near Lucerne, in Switzerland, Sunday, June 21, 2026. (Nathan Howard/Pool Photo via AP)
A convoy with U.S. Vice President JD Vance arrives at the Bürgenstock Resort in Obbuergen, near Lucerne, in Switzerland Sunday, June 21, 2026. (Urs Flueeler/Keystone, Pool Photo via AP)
A convoy with U.S. Vice President JD Vance arrives at the Bürgenstock Resort in Obbuergen, near Lucerne, in Switzerland Sunday, June 21, 2026. (Urs Flueeler/Keystone, Pool Photo via AP)
A convoy with U.S. Vice President JD Vance arrives at the Bürgenstock Resort in Obbuergen, near Lucerne, in Switzerland Sunday, June 21, 2026. (Urs Flueeler/Keystone, Pool Photo via AP)
A convoy with U.S. Vice President JD Vance arrives at the Bürgenstock Resort in Obbuergen, near Lucerne, in Switzerland Sunday, June 21, 2026. (Urs Flueeler/Keystone, Pool Photo via AP)
Iranian Foreign Minister Seyyed Abbas Araghchi, center, arrives at the Buergenstock resort in Obbuergen, near Lucerne, Switzerland, early Sunday, June 21, 2026. (Urs Flueeler/Keystone, Pool via AP)
Air Force Two, with Vice President JD Vance and second lady Usha Vance on board, departs Joint Base Andrews, Md., Saturday, June 20, 2026, en route to Switzerland. (Elizabeth Frantz/Pool Photo via AP)
Vice President JD Vance speaks to reporters at Joint Base Andrews, Md., Saturday, June 20, 2026, en route to Switzerland. (Elizabeth Frantz/Pool Photo via AP)
