US VICE-PRESIDENT JD Vance waves as he boards Air Force Two, after peace talks with Iran in Islamabad, Pakistan, on Sunday, April 12, 2026. 鈥 POOL VIA REUTERS/JACQUELYN MARTIN

ISLAMABAD 鈥 The US and Iran failed to reach an agreement to end their war despite lengthy talks that concluded on Sunday in the Pakistani capital Islamabad, jeopardizing a fragile ceasefire.

Each side blamed the other for the failure of the 21-hour long negotiations to end fighting that has killed thousands and sent global oil prices soaring since it began over six weeks ago.

鈥淭he bad news is that we have not reached an agreement, and I think that鈥檚 bad news for Iran much more than it鈥檚 bad news for the United States of America,鈥 Vice-President JD Vance, the head of the US delegation, told reporters shortly before he left Islamabad.

US CITES 鈥楻ED LINES,鈥 IRAN SAYS DEMANDS 鈥楨XCESSIVE鈥
鈥淪o we go back to the United States having not come to an agreement. We鈥檝e made very clear what our red lines are.鈥

The US delegation later left Pakistan, while the Iranians were to depart later on Sunday, two Pakistani sources told Reuters.

Mr. Vance said Iran had chosen not to accept American terms, including not to build nuclear weapons.

鈥淲e 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. That is the core goal of the president of the United States, and that鈥檚 what we鈥檝e tried to achieve through these negotiations.鈥

The talks in Islamabad, after a ceasefire earlier in the week, were the first direct US-Iranian meeting in more than a decade and the highest-level discussions since the 1979 Islamic Revolution.

Iran鈥檚 semi-official Tasnim news agency said that 鈥渆xcessive鈥 US demands had hindered reaching an agreement. Other Iranian media said there was agreement on a number of issues but that the Strait of Hormuz and Iran鈥檚 nuclear program were the main points of difference.

A spokesperson for Iran鈥檚 foreign ministry said the talks were conducted in an atmosphere of mistrust. 鈥淚t is natural that we shouldn鈥檛 have expected to reach agreement in just one session,鈥 the spokesperson was quoted as saying by Iranian media.

鈥淚t is imperative that the parties continue to uphold their commitment to ceasefire,鈥 Pakistan鈥檚 Foreign Minister Ishaq Dar said in a statement after the talks. The two sides agreed on Tuesday to a two-week ceasefire in an attempt to wind down a war that began on Feb. 28 with airstrikes by the US and Israel on Iran.

In his brief press conference, Mr. Vance did not mention reopening the Strait of Hormuz, a chokepoint for about 20% of global energy supplies that Tehran has blocked since the war began.

Mr. Vance said he had spoken with President Donald J. Trump as many as a dozen times during the talks. But even as the negotiations continued, Mr. Trump said on Saturday that a deal was not entirely necessary.

鈥淲e鈥檙e negotiating, whether we make a deal or not makes no difference to me, because we鈥檝e won,鈥 he told reporters.

The US delegation included special envoy Steve Witkoff and Mr. Trump鈥檚 son-in-law Jared Kushner. Iran鈥檚 team included Parliamentary Speaker Mohammad Bagher Ghalibaf and Foreign Minister Abbas Araghchi.

STRAIT OF HORMUZ
鈥淭here were mood swings from the two sides and the temperature went up and down during the meeting,鈥 a Pakistani source said in reference to an early round of talks, which carried on overnight.

Islamabad, a city of more than 2 million people, was locked down during the talks with thousands of paramilitary personnel and army troops on the streets.

Before the talks began, a senior Iranian source told Reuters the US had agreed to release frozen assets in Qatar and other foreign banks. A US official denied agreeing to release the money.

As well as the release of 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.

Tehran also wants to collect transit fees in the Strait of Hormuz.

Despite the differences in Islamabad, three supertankers fully laden with oil passed through the Strait of Hormuz on Saturday, shipping data showed, in what appeared to be the first vessels to exit the Gulf since the US-Iran ceasefire deal.

Hundreds of tankers are still stuck in the Gulf, waiting to exit during the two-week ceasefire period.

Mr. Trump鈥檚 stated goals have shifted, but as a minimum he wants free passage for global shipping through the Strait and the crippling of Iran鈥檚 nuclear enrichment program to ensure it cannot produce an atomic bomb.

Tehran has long denied wanting to build a nuclear weapon.

US ally Israel has also been bombing Tehran-backed Hezbollah militants in Lebanon and says that conflict is not part of the Iran-US ceasefire. Iran has insisted that the fighting in Lebanon has to stop. Reuters