Capitals, June 21 (SANA)U.S. President Donald Trump escalated political and military rhetoric toward Iran on Sunday as direct negotiations between the two sides opened at the Swiss resort of Bürgenstock, focusing on implementing a memorandum of understanding and advancing toward a final agreement.

In remarks to Fox News on Sunday,Trumpurged Iran to halt support for its allies inLebanon, warning of further strikes if it does not comply. He said Iran must “immediately stop their highly paid proxies in Lebanon from causing trouble,” adding that the United States “will hit Iran very hard again, just like we did last week, only harder.”

Trump also intensified warnings regarding theStrait of Hormuz, a key global energy corridor, stating that any attempt to close it would have severe consequences. He said such a move would mean “you won’t have a country,” and suggested the United States could take control of the strait or impose tolls on vessels if necessary.

He further warned Iranian negotiators that pursuing closure of the strait would lead to serious repercussions, saying they “won’t even make it back to your country.”

The escalation followed comments by Iranian President Masoud Pezeshkian, who said Iran would not relinquish its right to enrich uranium, describing it as a position the opposing side must accept.

Responding to those remarks, Trump said, “He better watch his mouth,” signaling the possibility of tougher measures if Iran does not make what he described as serious commitments during negotiations. He added that the current memorandum of understanding represents a temporary framework rather than a final agreement.

In contrast,U.S. Vice President JD Vancestruck a more diplomatic tone, saying the administration aims to open a “new page” with Iran and pursue long-term changes in bilateral relations. He noted that the talks mark a first direct engagement to address outstanding issues.

According to Axios, U.S. and Iranian negotiators held direct discussions with Qatari mediation, as Washington seeks to conclude the first round by facilitating access for United Nations inspectors to Iranian nuclear sites affected during recent conflict.

The report added that theUnited Statesis considering granting Iran partial access to frozen funds in exchange for practical steps related to the nuclear file.

Qatar and Pakistan, participating in mediation efforts, said the talks represent the beginning of a negotiation path toward a comprehensive and sustainable agreement. Pakistani Prime MinisterShehbaz Sharifdescribed the discussions as an opportunity to enhance regional peace and stability.

The Lebanese file remains a central focus of the negotiations amid continued tensions along the border. Vance said progress on a ceasefire in Lebanon is a priority alongside discussions on Iran’s nuclear program.

Meanwhile, the Strait of Hormuz continues to serve as a key pressure point between the two sides, with indications of reduced maritime traffic and the absence of some oil and gas tankers from transit routes in recent hours, raising concerns in global energy markets.