US Vice-President JD Vance said on Saturday that he expected to travel to Switzerland in the coming days for talks with Iranian officials over the signed interim agreement to end the US-Israel war with Iran, as Tehran said it had closed the Strait of Hormuz again over what it sees as violations by the US and Israel of the agreement.

Vance confirmed his travel plans to Fox News on Saturday after he had to cancel his original trip to Switzerland on Thursday. However, US Central Command disputed the claim that the Strait was fully closed. Vance described talks as a "delicate coordination dance" as tensions flared again in Lebanon between Israel and Hezbollah.

The negotiations in Bürgenstock, Switzerland, will include Jared Kushner, the president's son-in-law, and Steve Witkoff, who serve as special envoys to US President Donald Trump. Kushner and Witkoff are already in Switzerland ready to negotiate, Vance told Fox News.

The US negotiators are working on details related to Iran's nuclear program, according to the Associated Press.

Pakistan, a key mediator, said that "technical talks" between Washington and Tehran would begin Sunday in Switzerland. Qatari officials are also expected to attend.