Negotiations between Iran and the US, with Qatar and Pakistan acting as mediators, are set to be held on Sunday afternoon in Switzerland as delegations from all participating countries have arrived.

According to Iranian media, the talks are scheduled for 4pm local time at the Bürgenstock Hotel on the outskirts of Zurich.

Iran’s delegation is led by Parliament Speaker Mohammad Bagher Ghalibaf, while the US delegation is headed by Vice President JD Vance.

Senior Pakistani officials, including Prime Minister Shehbaz Sharif and Army Chief Field Marshal Asim Munir, would also attend the discussions alongside a Qatari delegation.

Peace talks at the Swiss mountaintop resort are being held as both Iran and the US seek a durable end to their war.

The US and Iran had agreed to a 60-day ceasefire for the negotiations, but Tehran’s Islamic Revolutionary Guard Corps on Saturday declared the Strait of Hormuz shut in response to Israeli strikes in Lebanon, although the US military said commercial vessels kept operating.

Those developments could complicate the talks in which both sides want to advance an interim deal brokered by Pakistan and signed on Wednesday by Presidents Donald Trump and Masoud Pezeshkian to end an almost four-month-long war.

Vance arrived at the scenic ​Buergenstock resort, accessed by a narrow road snaking through leafy hills and several security checkpoints manned by armed guards, after landing at Emmen Air Base early on Sunday, accompanied by second lady Usha Vance.

Vance hopes for progress on key issues

The talks, including mediators, were to start “during the course of the morning,” Switzerland’s Federal Department of Foreign Affairs said in a statement.

“I ⁠think we’re going to hopefully make progress on the nuclear issue, make progress on the Lebanon ceasefire issue,” with a “couple days of talks” likely, Vance told reporters at Joint Base Andrews in Maryland before departing.

Iran’s Revolutionary Guards, ​accusing Israel of “crimes” in Lebanon that violated US commitments to the ceasefire, warned ships would be at risk if they approached the strait, which carried a fifth of global oil supplies before the US and Israel launched attacks ​on February 28.

Despite the Lebanon truce, Israeli forces and the Hezbollah group attacked each other on Saturday.

Iran’s Foreign Ministry spokesperson Esmaeil Baghaei said the visit of the Iranian delegation is part of follow-up efforts on US commitments under the Islamabad Memorandum of Understanding, which is linked to establishing a ceasefire in Lebanon and halting Israeli military actions there.

Earlier on Sunday, Iranian Foreign Minister Abbas Araghchi held a meeting with Swiss Foreign Minister Ignazio Cassis, marking the opening diplomatic engagement ahead of the talks.

Switzerland has previously hosted Iran-related negotiations, including nuclear talks between 2013 and 2015.

While Pakistan is serving as the primary mediator in the current process, the venue was agreed upon by all parties following the signing of a war-termination understanding between the two sides’ leaders.

The Iranian delegation, which arrived in Zurich early Sunday, was received by Swiss officials and staff from Iran’s embassy in Bern.

Alongside Ghalibaf, the delegation includes Foreign Minister Abbas Araghchi, senior security official Ali Bagheri, Central Bank Governor Mohammad Reza Farzin, Oil Ministry officials, and other senior foreign ministry representatives.