Trump says damage to Iran's nuclear sites is 'far below ground level'

Forty Israeli Air Force fighter jets targeted "dozens" of military targets overnight in Iran, including an inactive nuclear reactor in the area of Arak, the Israel Defense Forces said Thursday.

The IDF said it struck the Arak heavy water reactor overnight after earlier issuing an evacuation order for the area surrounding the site.

"Construction of the reactor began in 1997 but was not completed due to international community intervention," the IDF said.

The air force said the strike hit the "structure that seals the reactor, which is a main component in the production of plutonium, thus preventing its ability to be used again for the production of nuclear weapons."

A "nuclear weapons development" site in the area of Natanz and other military production sites were also targeted, Israel said. Israel alleged that the Natanz site included "components and specialised equipment used to advance nuclear weapons development."

An Iranian ballistic missile damaged a hospital in southern Israel early on Thursday with a "direct hit," Israel said.

"The Iranian regime targeted Soroka Hospital in Beersheba with a ballistic missile -- hitting a major medical center," a post to the official Israel social media channel said. "We will not stand by. We will continue doing what must be done to defend our people."

The Israel Police force said 20 patients were evacuated from the hospital, but added that they had not yet been through the entire hospital.

Dozens of ballistic missiles were launched at Israel on Thursday, an Israeli military official said, including the one that struck the hospital.

Police said Thursday morning they had received reports of projectile impacts at "multiple locations" in central Israel, along with the hospital site in the southern district.

"Police officers and bomb disposal units are on scene and urged public to stay clear of all impact sites," the force said in a statement.

President Donald Trump is getting comfortable with the idea of taking out Iran's nuclear facility, the Fordo Fuel Enrichment Plant, a source familiar with the intelligence told ABC News.

It would not be just one strike on the facility, it would be several, the source said. There is now a movement to get ready for this, the source added.

There has been no response from the Iranians regarding ongoing nuclear talks, likely because of the way Trump demanded an unconditional surrender.

Trump is trying to engage the MAGA base with Vice President JD Vance to see what their reaction would be to American strikes against Iran.

The president has been briefed on security at the U.S. Army bases, since they could be incredibly vulnerable to retaliation from Iran.

The president's position on a potential attack comes as the Israelis discovered that they did not take out all air defenses in Iran as they had previously thought, adding to concern.

Following a meeting in the Situation Room on Tuesday, President Donald Trump told top advisers that he approved of attack plans for Iran that were presented to him, but said he was waiting to see if Iran would be willing to discuss ending their nuclear program, sources familiar with the matter told ABC News.

The news of the attack plan approval was first reported by the Wall Street Journal.

Trump has not made any final decision on the United States' involvement and he has yet to decide whether or not to give a final order and go through with the readied attack plans.

"As President Trump said himself today, all options remain on the table," White House Press Secretary Karoline Leavitt said.

As ABC News has reported, multiple sources have said that the president has been presented a range of options by his national security team that he is considering, including using U.S. military assets to strike Iranian nuclear facilities.

-ABC News' Mary Bruce, Rachel Scott and Katherine Faulders