Vice President JD Vance says Iran chose not to accept US terms, while Iran says it did not expect a deal in the first meeting.
The United States and Iran have failed to reach a deal after high-stakes talks in the Pakistani capital, with Vice President JD Vance saying Tehran refused to accept Washingtonâs terms after 21 hours of negotiations in Islamabad.
âThe bad news is that we have not reached an agreement, and I think thatâs bad news for Iran much more than itâs bad news for the United States of America,â Vance, the head of the US delegation, told reporters shortly before he left Islamabad after the highest-level meeting between Washington and Tehran since the 1979 Islamic revolution.

He said Iran chose ânot to accept our termsâ, adding that the US needs to see a âfundamental commitmentâ from Tehran not to develop nuclear weapons.
âWe need to see an affirmative commitment that they will not seek a nuclear weapon, and they will not seek the tools that would enable them to quickly achieve a nuclear weapon,â Vance said.
Al Jazeeraâs John Hendren, reporting from Washington, DC, said the fact that President Donald Trump sent Vance showed the US was taking these talks seriously.
âThe fact that Vance left doesnât necessarily mean that the talks are over,â he said, adding that the main sticking points seem to be the Strait of Hormuz, which Iran continues to control, and the gaps in the nuclear issue.
âThe US has been negotiating with Iran over time; those talks can continue remotely, and leaving those talks may simply be a hard stance,â the Al Jazeera correspondent added.
Hendren said the US is demanding not just that Iran pledge that it will not develop nuclear weapons, but also that it will not even try to access those tools, adding that such gaps made the talks in the mid-2010s take years to negotiate.

Tehran expects contacts to continue
Iranâs Ministry of Foreign Affairs said on Sunday that no one had expected the talks with the US to reach an agreement in a single session.
âNaturally, from the beginning, we should not have expected to reach an agreement in a single session. No one had such an expectation,â ministry spokesperson Esmaeil Baghaei said, according to state broadcaster IRIB.
He said Tehran was âconfident that contacts between us and Pakistan, as well as our other friends in the region, will continueâ.
Al Jazeeraâs Tohid Asadi, reporting from Tehran, said the Iranian side did not share information on the technicalities or other details pertaining to the points of controversy in the talks.
âPreviously, the domain of the talks between Washington and Iran was concentrated upon the nuclear dossier and stockpile of highly enriched uranium, and that was a matter of controversy in the previous rounds of negotiations,â he said.
âBut this time, weâre dealing with a rather comprehensive approach when it comes to other issues; and obviously, with that comprehensiveness comes other controversial issues,â said the Al Jazeera correspondent, adding that rival sides are looking to address many subjects from the Strait of Hormuz to security assurances.

As well as the release of frozen assets abroad, Tehran is demanding control of the Strait of Hormuz, payment of war reparations, and a ceasefire across the region, including in Lebanon, according to Iranian state TV and officials.
However, US ally Israel has refused to stop its brutal offensive against the Hezbollah group in Lebanon. Tehran says the ceasefire agreed last week includes the war in Lebanon, but the US and Israel have both rejected it. The initial post by Pakistani Prime Minister Shahbaz Sharif announcing the ceasefire deal included Lebanon.
As the talks were under way in Islamabad, Prime Minister Benjamin Netanyahu said Israelâs military campaign against Iran was not over. âIsrael under my leadership will continue to fight Iranâs terror regime and its proxies,â he said in a post on X.
Netanyahu also said Israel is seeking a deal with Lebanon. Reports say Yechiel Leiter, the Israeli ambassador to the US, has spoken to the Lebanese envoy in Washington, DC, for the first time. In a statement, Leiter said Israel would not accept a ceasefire with Hezbollah.
Call for continued truce
Meanwhile, Pakistan has called on the US and Iran to uphold their commitment to the ceasefire and continue efforts to achieve a durable peace.
âOn behalf of Pakistan, I would like to express gratitude to the two sides for appreciating Pakistanâs efforts to achieve a ceasefire and its mediator role. We hope that the two sides continue with a positive spirit to achieve durable peace and prosperity for the entire region and beyond,â Pakistanâs Foreign Minister Ishaq Dar said.
Al Jazeeraâs Osama Bin Javaid, reporting from Islamabad, said that in the framework proposed by Iran before the talks, there was no mention of a complete surrender of nuclear ambitions.
âBut what the US is essentially asking Iran now is that they give up their right to any nuclear programme, even for medical purposes,â he said.
âThere is a sea of mistrust that they are trying to build bridges over, and statements like this and leaving the negotiations with an ultimatum are not going to help bridge those divides,â he said.
The US and Israel launched a war on Iran on February 28 that expanded to the wider Middle East region, with Tehran carrying out retaliatory attacks on Israel and neighbouring Gulf countries hosting US assets. More than 2,000 people were killed, and military and civilian areas were damaged in the US-Israeli attacks on Iran.
The war began despite several rounds of talks between Washington and Tehran. Oman, the mediator, said the war started despite a deal âwithin reachâ. Experts have said the war violated international laws. A landmark nuclear deal signed between the US and Iran in 2015 was scrapped during Trumpâs first term as president.
The war also caused a global energy crisis after Iran put a chokehold on the Strait of Hormuz, through which some 20 percent of the worldâs oil and gas exports pass.
The US delegation, led by Vance, and the Iranian delegation, led by Parliament Speaker Mohammad Bagher Ghalibaf, had discussed how to advance a ceasefire already threatened by deep disagreements and Israelâs continued attacks against the Lebanese group Hezbollah.
Israeli strikes have continued across southern Lebanon, with at least six people killed in the Tyre district in the latest attack.