President Trump says US Navy will begin blockade of Strait of Hormuz

Pakistan’s Foreign Ministry shared a statement and video announcing the arrival of the U.S. delegation in Islamabad ahead of the Iran talks.

"A high-powered U.S. delegation led by U.S. Vice President H.E. J.D. Vance along with Special Envoy Mr. Steve Witkoff and Mr. Jared Kushner arrived in Islamabad today to participate in Islamabad Talks," Pakistan said.

The delegation was received by senior Pakistani officials on their arrival, Pakistan said, expressing "hope that parties would engage constructively, and reiterated Pakistan's desire to continue facilitating the parties towards reaching lasting and durable solution to the conflict."

-ABC News' Rashid Haddou

The Israeli Ministry of Foreign Affairs confirmed Israel has "agreed to begin formal peace negotiations" on Tuesday, following a call between the Israeli and Lebanese ambassadors to the U.S. on Friday.

The ministry added that Israel "refused to discuss a ceasefire" with Hezbollah, after the office of the Lebanese presidency said earlier Friday there would be discussion of "the announcement of a ceasefire" during Tuesday's meeting.

As Vice President JD Vance and top White House officials travel to Islamabad for peace talks with Iran, President Donald Trump projected confidence for how the negotiations would go, saying: "We'll be able to finish it off. One way or the other. It's going well."

"I wish him luck, he's got a big thing -- we'll find out what's going on," Trump told reporters on the tarmac as he departed D.C. for a political fundraiser in nearby Charlottesville. "Have a good team, and they meet tomorrow. We'll see how it all works out."

Trump downplayed the fact that his top condition for the ceasefire -- that the Strait of Hormuz must be open -- has not been met, saying he anticipated progress in opening the Strait "with or without" a deal. He later said that the Strait would open "fairly soon."

Asked to articulate what a good deal looks like, he said, "No nuclear weapon -- number one."

-ABC News' Isabella Murray

Lebanon and Israel will hold a meeting on Tuesday at the U.S. State Department "to discuss the announcement of a ceasefire and the start date of negotiations between Lebanon and Israel under the auspices of the United States," according to the office of the Lebanese presidency.

This comes after the Lebanese and Israeli ambassadors to the U.S. spoke on the phone Friday as part of the framework for talks aimed at ending hostilities between the two countries. The U.S. ambassador to Lebanon, Michel Issa, who is currently in Washington, D.C., was also on the call.

-ABC News' Ghazi Balkiz