US-Iran Peace Talks Collapse Over Nuclear Guarantees and Hormuz Closure

The highest-level direct talks between Washington and Tehran since the 1979 revolution ended in acrimony and mutual recrimination early Sunday, after a marathon 21-hour session in Islamabad failed to bridge irreconcilable demands over Iran’s nuclear programme and the status of the Strait of Hormuz. US Vice President JD Vance, whose expression was described by European observers as “not merely serious but as if he had just swallowed a cup of Iranian vinegar,” departed Pakistan with the assessment that no agreement had been reached, stating flatly: “They chose not to accept our terms.”

The core impasse, viewed from Washington, turned on what Vance called the absence of “a fundamental commitment from the Iranians not to develop a nuclear weapon – not now, not in two years, but over the long term.” American negotiators presented what they termed a final offer, insisting on verifiable and durable dismantlement of Tehran’s enrichment capabilities. From the Iranian side, however, the negotiation was framed as a comprehensive bargain: any permanent nuclear rollback would require the immediate unlocking of billions of dollars in frozen overseas assets and an end to the closure of the Strait of Hormuz only under terms of an “equitable agreement.” Italian press reports identified three irreducible sticking points: the reopening of Hormuz, the fate of highly enriched uranium stockpiles, and the release of those frozen funds.

Iran’s lead negotiator, Parliament Speaker Mohammad Bagher Ghalibaf, later declared on social media that he had gained “no trust in the US delegation,” while official sources in Tehran told the Fars news agency, which is close to the Revolutionary Guards, that there would be “no change in the situation in the Strait of Hormuz unless the US accepts a reasonable agreement.” The Iranian foreign ministry accused Washington of making “excessive demands,” a charge that echoes decades of mutual suspicion. The Americans, for their part, pointed to a lack of any affirmative pledge on the nuclear file as the deal-breaker.

International reaction was swift and concerned. Australia’s Foreign Minister Penny Wong, speaking from Canberra, called the failure “disappointing” and urged both parties to maintain the ceasefire and return to talks, warning that “any escalation would impose an even greater human cost and further impact the global economy.” The Pakistani hosts, who had offered their capital as neutral ground for the historic encounter, pleaded for the truce to hold. Yet the mood was darkened by comments attributed to former US President Donald Trump, who was reported by German broadsheets to have remarked that the outcome “makes no difference” to American strategy.

As both delegations left Islamabad, the prospects for a near-term diplomatic breakthrough appeared dim. Tehran signalled no urgency to resume negotiations, while the military-strategic reality on the waterways remained unchanged: American warships had already transited the Strait of Hormuz, and Iranian naval forces warned that any further “attempts” would meet a “firm response.” Analysts in London note that while the diplomatic track is not formally dead – Iran’s foreign ministry spokesperson was quoted as saying “diplomacy never ends” – the gap between the US demand for permanent nuclear abstinence and Iran’s insistence on a grand bargain linking sanctions relief, security guarantees and maritime access is wider than at any point since the collapse of the 2015 nuclear deal. For now, the door remains, as one German commentator wrote, “ajar by a crack,” but the gale howling through it is gathering force.