President Donald Trump said Monday night that he is dissatisfied with the selection of Mojtaba Khamenei as Iran’s new supreme leader following the death of his father, and suggested the new leader may struggle to maintain stability. Trump also indicated that Iran’s government may be seeking negotiations as the U.S.-Israel war with Tehran moves into its second week.

Speaking with Fox News chief foreign correspondent Trey Yingst during a flight on Air Force One from Miami back to Washington, Trump said Iranian officials appear eager to open discussions aimed at ending the conflict.

“It’s possible, depends on what terms, possible, only possible,” Trump told Yingst while aboard Air Force One en route to Washington from Miami. “You know, we sort of don’t have to speak anymore, you know, if you really think about it, but it’s possible.”

Trump added that he was displeased with the decision to elevate Mojtaba Khamenei to Iran’s highest position of power following the death of his father, the longtime supreme leader.

Earlier Monday, Trump had spoken with reporters at his Trump National Doral Miami golf club, where he delivered an upbeat assessment of the military campaign known as Operation Epic Fury.

“They have no navy, they have no air force, they have no anti-aircraft equipment, it’s all been blown up,” the president said of Iran’s military strength. “They have no radar. They have no telecommunications, and they have no leadership. It’s all gone.

“So, you know, you could look at that statement. We could, we could call it a tremendous success right now as we leave here. I could call it, or we could go further and we’re going to go further.”

Trump also defended the decision to launch the operation on Feb. 28, explaining that acting sooner prevented what he believed would have been an Iranian attack on U.S. or allied forces.

“if we had waited three days, I believe we would have been attacked” by Iran.

“When we attacked them first, we knocked out 50% of their missiles, and if we didn’t, it would have been a much harder fight,” said Trump, adding: “No other president had the guts to do it … I didn’t want some president who hasn’t got the courage in five years or ten years to go in.”

The president also said he had been informed last month by special envoy Steve Witkoff and his son-in-law Jared Kushner that Iranian officials claimed to possess enough enriched uranium to build multiple nuclear weapons.

“I said, ‘You know, they’re not playing this smart. Because they’re basically saying that I have to attack them,’” Trump told Fox News. “They should have just said, ‘We’re not going to build a nuclear missile.’”

According to U.S. Central Command, American forces have struck more than 5,000 targets during the first ten days of Operation Epic Fury. Those strikes have included attacks on over 50 Iranian naval vessels that officials say were damaged or destroyed.

Trump also told reporters Monday evening that several major Iranian targets have intentionally been left untouched for the time being, suggesting they could be hit later if the conflict escalates.

“we’ve left some of the most important targets for later in case we need to do it. If we hit them, it’s going to take many years for them to be rebuilt.”

He explained that many of those potential targets involve infrastructure tied to Iran’s power supply and other critical systems.

“electricity production and many other things, so we’re not looking to do that if we don’t have to. But they’re the kind of things that are very easy to hit but very devastating if they are hit.

“We are waiting to see what happens before we hit them. We could take them all out in one day.”