Iran live updates: Rubio says 'significant progress' made in Iran talks

A source familiar with the situation told ABC News on Sunday that there is "serious concern and disappointment" in Israeli Prime Minister Benjamin Netanyahu's office over a possible deal between the U.S. and Iran to end the ongoing war. The source said that Israeli efforts are ongoing "to improve the outcome of the deal."

An Israeli official told ABC News that the emerging deal appears to be bad because "it signals to the Iranians they have a weapon no less effective than nuclear weapons, and that is the Strait of Hormuz." The official added that it is unclear what will happen after the first phase of the peace deal.

Netanyahu is expected to hold a security meeting with his top defense officials at 7 p.m. local time (12 p.m. ET) to discuss the emerging deal, an Israeli official told ABC News.

-ABC News' Jordana Miller and Rashid Haddou-Riff

Pakistani Prime Minister Shehbaz Sharif congratulated President Donald Trump on his "extraordinary efforts to pursue peace" with Iran in a post posted on X on Sunday, expressing hope to "host the next round of talks very soon."

Trump, Sharif said, had a "productive telephone call earlier today, with the leaders of Saudi Arabia, Qatar, Turkiye, Egypt, the UAE, Jordan and Pakistan." Sharif said Pakistan's army chief -- Field Marshal Syed Asim Munir -- took part in the call.

"Pakistan will continue its peace efforts with utmost sincerity," Sharif wrote.

-ABC News' Rashid Haddou-Riffi and Habibullah Khan

Secretary of State Marco Rubio said on Sunday that the U.S. has made "significant progress" in discussions related to Iran, while stressing the "ultimate goal is that Iran can never have a nuclear weapon."

Speaking during his visit to India in a press conference with Indian External Affairs Minister Subrahmanyam Jaishankar, Rubio said that additional developments could come later on Sunday.

Rubio added that the administration has worked with Gulf regional partners over the last 48 hours on a possible framework aimed at keeping international waterways open and addressing concerns surrounding Iran's nuclear ambitions.

"We think we've made some progress on the outline of something that, if it works, could give us that outcome," Rubio said, while cautioning that any agreement would still require "full Iranian acceptance, and then compliance."

He also condemned Iranian threats against commercial shipping routes, calling such actions "illegal under any concept of international law."

Rubio defended President Donald Trump's record on Iran, stating "there is no one who has been stronger on this issue than President Trump," dismissing suggestions that the administration would agree to any arrangement that strengthens Iran's nuclear capabilities.

"The idea that somehow this president, given everything he's already proven he's willing to do, is going to somehow agree to a deal that ultimately winds up putting Iran in a stronger position when it comes to nuclear ambitions is absurd," Rubio said.

Rubio closed his remarks by expressing cautious optimism, saying "perhaps there is the possibility that over the next few hours the world will get some good news."

-ABC News' Rebecca Gelpi-Ufret

President Donald Trump said Saturday that a framework for a peace deal with Iran will be announced shortly and it will include opening the Strait of Hormuz.

In a lengthy social media post, the president said he spoke with several Middle Eastern leaders and "an Agreement has been largely negotiated, subject to finalization between the United States of America, the Islamic Republic of Iran, and the various other Countries."

"Final aspects and details of the Deal are currently being discussed, and will be announced shortly," he said.

The post added: "In addition to many other elements of the Agreement, the Strait of Hormuz will be opened."

-ABC News' Selina Wang