Switzerland will host preliminary talks between Iran and the US on June 20, with representatives from Pakistan, Qatar, and other relevant countries also attending, the Swiss foreign ministry said on June 18.

The meeting in Burgstock follows a digitally signed memorandum of understanding between Iranian President Masoud Pezeshkian and US President Donald Trump, which outlines steps to ease tensions and restore diplomatic relations, signed late on June 17.

According to sources close to Washington, the US rushed ahead with signing the document with Iran due to fears of third parties, including Israel, undermining any potential long-term peace deal between the two foes. 

The Swiss foreign ministry stated that the discussions will focus on implementing the agreement, though it did not provide further details on the agenda or participants.

The talks mark a significant step in addressing longstanding tensions between Iran and the US, with regional mediators playing a key role in facilitating dialogue.

The text of the Memorandum of Understanding to end the imposed war between the US and the Israeli regime against the Islamic Republic of Iran was signed in the early hours of June 18 by the presidents of Iran, Masoud Pezeshkian, and the United States, Donald Trump.

Vice President J.D. Vance, alon`g with Iran's Parliament speaker, are expected to be at the official ceremony of the memorandum of understanding in Switzerland, according to Iranian sources. 

Other sources have added that Trump and Pezeshkian could also meet for the first time marking the first bilateral meeting between the two countries since the fall of the Shah of Iran in 1979. 

Following the signing, Ghalibaf, who led the Iranian negotiating team, said the country secured a lifting of a naval blockade, an extension of a ceasefire across Lebanon and a commitment to $300bn in investment under the agreement, framing the talks as an arm of a wider confrontation rather than a concession.

His comments mark one of the most detailed accounts to date of how Tehran approached indirect talks following the recent conflict with Israel and the US.

He said the US had requested the ceasefire after a period of pursuing it, and that incidents continued once it took effect, including strikes on two foreign vessels attempting to pass through the Strait of Hormuz that caught fire, an event he said satellite imagery confirmed.

"In negotiations that are a method of struggle, there is no capitulation and no sloganeering," said Ghalibaf.

He said Iran threatened the US and issued an ultimatum after the targeting of Beirut's Dahiyeh suburb, prompting US President Donald Trump to instruct Israeli Prime Minister Benjamin Netanyahu to halt the attacks.

Under the agreement, a 30-day timeline for lifting the blockade was compressed into a single night, he said. He added that clause 6 of the accord covered reconstruction and economic development, setting a $300bn investment target in Iran, part of which would fund rebuilding.

He said clause 13 was structured on an action-for-action basis, meaning Tehran would withhold compliance if Washington failed to meet its commitments.

He said the Strait of Hormuz would not return to its previous status, adding that Iran would operate within international maritime law and charge for services provided to vessels as a coastal state.