Iran live updates: US blockade of Iran's Strait of Hormuz ports to begin Monday

As Vice President JD Vance heads to Islamabad, Pakistan, for peace talks with Iran, President Donald Trump is standing firmly by his side.

In a phone interview with the NY Post on Friday, Trump said that his vice president is doing a "very good job" and that he has "nothing to prove."

"He doesn't have to prove anything because he's doing a very good job," Trump reportedly said, after the NY Post asked if Vance's negotiating abilities are being tested.

ABC News previously reported that Vance internally expressed reservations about the strikes. Trump has also said that he and Vance are "philosophically a little bit different" when it comes to U.S. war with Iran.

The president continued to cast doubt over the Iranian's credibility, despite his insistence that regime change has occurred and that the new leaders are more "reasonable."

"You're dealing against people that we don't know whether or not they tell the truth. To our face, they're getting rid of all nuclear weapons, everything's gone. And then they go out to the press and say, 'No, we'd like to enrich,'" Trump said to the NY Post.

"So we'll find out. But no, he's done a great job. He has nothing to prove," Trump added.

Just before taking off to Islamabad, Pakistan, for negotiation talks with Iran, Vice President JD Vance told reporters he expects "positive" discussions.

"We're looking forward to the negotiation. I think it's going to be positive," Vance told reporters before boarding Air Force Two.

Despite the optimistic outlook, the vice president delivered a warning that the U.S. will not be "receptive" if the Iranians try to "play us."

"We'll foresee, as the President of the United States said, if the Iranians are willing to negotiate in good faith, we're certainly willing to extend the open hand. If they're going to try to play us, then they're going to find that the negotiating team is not that receptive," he said.

Vance added that President Donald Trump has given the American negotiating team "some pretty clear guidelines" that he intends to see through.

Vance will be leading the U.S. delegation in upcoming negotiations, which are slated to begin Saturday morning.

Iran's Deputy Foreign Minister Majid Takht-Ravanchi said Friday that Tehran's proposed 10-point plan will be the basis for the negotiations, according to the Islamic Republic News Agency.

"We do not want a ceasefire that allows the aggressor enemy to rearm and carry out further attacks," Takht-Ravanchi told ambassadors and heads of foreign diplomatic missions.

"The Islamic Republic of Iran always welcomes diplomacy and dialogue, but not a dialogue that is based on false information with the aim of deception and laying the groundwork for another military aggression against Iran," the statement said.

The Islamic Revolutionary Guard Corps (IRGC) said in a statement on Friday that Iran's armed forces have not carried out any airstrikes against other countries since the ceasefire began.

"The Armed Forces of the Islamic Republic of Iran have absolutely not launched any projectiles toward any country during the ceasefire hours up to this moment," the statement said.

The IRGC added that if Iran were to strike any target, it would "courageously announce it in an official statement."