Iranian Parliament Speaker and top negotiator Mohammad Bagher Ghalibaf said on Sunday that the United States should be careful with its statements, threatening that Iran's armed forces were prepared to respond.
Prime Minister Benjamin Netanyahu said Israel would not allow Iran to acquire nuclear weapons and would maintain military pressure on Hezbollah, signaling that ongoing US-Iran talks in Switzerland would not alter Israel’s security policies or constrain its freedom of military action.
US President Donald Trump warned Iran to stop supporting what he described as its “highly paid proxies” in Lebanon, saying Washington would strike Iran again if they continued “causing trouble.”
IAEA Director General Rafael Grossi said he met Swiss Foreign Minister Ignazio Cassis in Burgenstock on Sunday “to take stock of recent developments regarding Iran, the path ahead and the important role” of the UN nuclear watchdog.
Qatar said on Sunday that the Lake Lucerne summit and the first meeting of a high-level committee had begun with representatives from the United States, Iran, Qatar and Pakistan taking part.
A US delegation led by Vice President JD Vance and an Iranian delegation led by Parliament Speaker Mohammad Bagher Ghalibaf were in Burgenstock, Switzerland, on Sunday for the beginning of US-Iran talks.
Iran foreign ministry spokesperson said on Sunday that the US failure to ensure a ceasefire in Lebanon would be a central issue at the meeting with US officials in Burgenstock, Switzerland.
Israeli Prime Minister Benjamin Netanyahu said on Sunday that Israel's military operations against Iran had created conditions for the eventual fall of the Islamic Republic and urged Iranians to seize the opportunity to overthrow their government.
Netanyahu made the remarks at the Jerusalem News Syndicate (JNS) International Policy Summit, where he argued that Israeli and US actions had severely damaged Iran's nuclear program, military capabilities and regional allies.
Netanyahu said Israel had prevented Iran from acquiring nuclear weapons, destroyed nuclear infrastructure and killed senior nuclear scientists through operations conducted over the past year. He also said Israeli strikes had severely damaged the Islamic Revolutionary Guards Corps and weakened Iran's regional allies.
The Israeli leader said the operations marked a shift in Israel's security doctrine, allowing direct military action inside Iran against nuclear, missile and other targets.
Netanyahu also highlighted Israeli operations against Hezbollah and Hamas, including the killing of senior leaders and attacks on military infrastructure. He said Israel would maintain security zones in Gaza, Syria and Lebanon for as long as necessary.
“We established a security zone in Lebanon, and we shall keep it as long as necessary to protect our people,” Netanyahu said.
Israel will continue to hold a “security zone” in southern Lebanon along its border for as long as necessary to protect its citizens, Prime Minister Benjamin Netanyahu said on Sunday.
“We established a security zone in Lebanon, and we shall keep it as long as is necessary to protect our people,” Netanyahu told a conference in Jerusalem.
Mahmoud Nabavian, a member of the Iranian parliament’s National Security Committee, criticized Iran’s negotiating team after US President Donald Trump warned that if Iran closed the Strait of Hormuz, its negotiators “would not be able to return to their country.”
“How long will the humiliation and threats against the Iranian nation be accepted?” Nabavian wrote on X.
The future course of talks between Iran and the United States remains uncertain following comments by US President Donald Trump, an Iranian state television reporter said on Sunday.
“Whether the negotiations will continue remains unclear,” the reporter said, adding that reactions to the response by Iran’s chief negotiator to Trump’s threats would be significant in determining the next steps.
The comments came after talks between Iranian and US delegations in Switzerland were paused, with an Iranian source earlier telling Reuters that negotiations had stopped but had not ended.
Talks between Iran and the United States in Switzerland were paused on Sunday but have not ended, an Iranian source told Reuters, after the first session halted following roughly 80 minutes of discussions.
Earlier, Iran's Guards-linked Tasnim news agency cited a source familiar with the negotiating team that Iran's delegation left the venue of talks in protest over comments by President Donald Trump.
Trump warned Iran on Sunday to stop what he described as its “highly paid proxies” in Lebanon from “causing trouble,” saying Washington would strike Iran again if they did not.
Iran's official IRNA news agency reported on Sunday that the Iranian delegation had left the negotiations venue after meeting with the Qatari delegation, one of the mediators involved in the talks.
The report fueled speculation that discussions between Iran and the United States in Switzerland had been suspended or ended.
However, Barak Ravid of Axios cited a diplomat participating in the talks who disputed that account.
“The Iranians haven't left and the talks between them and the US are continuing,” the diplomat said.
Iran's Foreign Ministry said on Sunday that negotiations on a final agreement cannot begin until key provisions of the memorandum ending the war are implemented, including a halt to fighting on all fronts and steps related to Iranian oil exports and frozen assets.
"The start of negotiations on a final agreement is contingent upon the implementation of clauses 1, 4, 5, 10 and 11," Foreign Ministry spokesman Esmail Baghaei wrote on X.
Baghaei said the talks in Switzerland were focused on implementing the memorandum's provisions, particularly clause 1, which he said requires "an end to the war on all fronts, including Lebanon."
He added that discussions were also reviewing measures designed to implement clause 10, concerning Iran's oil exports, and clause 11, covering the release of blocked Iranian assets.
Iran signaled that wider negotiations with the United States will not advance unless the war in Lebanon ends, Hossein Ghorbanzadeh, a member of Tehran's negotiating team told state media on Sunday.
The official also said executive procedures for the release of Iranian frozen funds had been carried out with the participation of a Qatari delegation, indicating progress on a key issue in the talks.
Iran's delegation left the venue of talks with the United States in Switzerland in protest over comments by President Donald Trump, Iran's Guards-linked Tasnim news agency reported on Sunday, citing a source familiar with the negotiating team.
Prime Minister Benjamin Netanyahu said Israel would not allow Iran to acquire nuclear weapons and would maintain military pressure on Hezbollah, signaling that ongoing US-Iran talks in Switzerland would not alter Israel’s security policies or constrain its freedom of military action.
“As long as I am prime minister of Israel, that will not happen,” Netanyahu said on Sunday, referring to Iran obtaining nuclear weapons. “Whatever diplomatic developments may occur, I will not allow Iran to acquire nuclear weapons.”
Speaking at a memorial marking the 50th anniversary of the death of his brother Yoni Netanyahu, who was killed leading the Entebbe hostage rescue operation, Netanyahu said Israel would continue defending what he described as its vital national interests.
The Israeli premier repeated his assertion that Israel’s campaigns against Iran over the past year had removed an immediate threat, arguing that without Israeli action Tehran would already possess nuclear weapons.
Netanyahu also said Israel would remain in its security zone in southern Lebanon for as long as necessary to protect northern Israeli communities from Hezbollah attacks, adding that Israel would not relinquish achievements gained through its military operations against Iran and its regional allies.

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