President Joe Biden on Monday touted the "unprecedented military effort to defend Israel" against Iran, declaring "together with our partners we defeated that attack."

In his first on-camera remarks since this weekend's Iranian strike, the president stressed that "the United States is committed to Israel's security."

"We're committed to a cease-fire that will bring the hostages home and preventing the conflict from spreading beyond what it already has" the president told reporters in the Oval Office ahead of his meeting with the Iraqi prime minister. "We are also committed to the security of our personnel and our partners in the region, including Iraq."

A senior Israeli Air Force official said that the normalization of relations with Middle Eastern countries "served us during this crucial time" this weekend.

"It has to be clear that real assets" provided Israel with "information" and an "early warning," and the "majority" of that intelligence came from the coalition, the senior Israeli Air Force official said at a Monday briefing.

In terms of the types of drones and missiles used by Iran in the Saturday night attack, the official said Israel did not face any types of missiles that it had not shot down during attacks in recent months by Iranian proxies.

The official confirmed that only "a handful" of ballistic missiles fired by Iran were not intercepted.

"Five, more or less, managed to penetrate," the official said.

He said Israel's "strategic investment" in air defense capabilities, made years ago, had paid off, and called Israel shooting down nearly all missiles a "historic success."

The official was asked if Israel would be able to withstand a similar level of attack from Iran, without the support of allies such as the U.S.

"It would be more challenging,” the official conceded, but added that Israel has capabilities "to face this kind of challenge."

-ABC News’ Tom Soufi Burridge

Israel on Saturday demonstrated its "military superiority" against Iran while also showcasing its partnership with military allies, including the United States, John Kirby, spokesperson for the White House National Security Council, said Monday.

Israel said Sunday about 99% of the missiles and drones launched by Iran were intercepted by Israel and its allies, a defense that Kirby called a "tremendous success."

"I think it did show, did demonstrate that Iran is not the power that it purports to be, that it doesn't have that same military superiority," Kirby said on "Good Morning America."

Israeli Prime Minister Benjamin Netanyahu is expected on Monday to reconvene his war cabinet, a body that met on Sunday without deciding on a response to Iran's attack. And President Joe Biden and his G7 counterparts on Sunday released a statement urging Iran to cease its attacks.

"With its actions, Iran has further stepped toward the destabilization of the region and risks provoking an uncontrollable regional escalation," the G7 leaders' statement said. "This must be avoided."

The United States would not participate in an Israeli response, if the country decides to strike back against Iran, U.S. defense and security officials said on Sunday.

But the final decision on whether Israel strikes back will fall to Netanyahu, Kirby said Monday.

"The president was also clear, as he has been throughout, that we do not seek a wider war in the region and we don't seek conflict with Iran," he said.

-ABC News' Kevin Shalvey

Israeli Prime Minister Benjamin Netanyahu is expected on Monday to meet with his war cabinet to discuss potential responses to Iran’s attack.

The cabinet had convened on Sunday, but ended their meeting without making a final decision about a response to Iran’s attack, a person with knowledge of the meeting told ABC News.

The cabinet members include Defense Minister Yoav Gallant and Benny Gantz, a former minister of defense.

-ABC News’ Joe Simonetti, Jordana Miller and Kevin Shalvey

The U.S. is sanctioning two groups and 16 people it says enabled Iran's drone production following Iran's attack on Israel last weekend.

"Today, in coordination with the United Kingdom and in consultation with partners and allies, we are taking swift and decisive action to respond to Iran’s unprecedented attack on Israel," Treasury Secretary Janet Yellen said. "We’re using Treasury’s economic tools to degrade and disrupt key aspects of Iran’s malign activity, including its UAV program and the revenue the regime generates to support its terrorism."

The Treasury Department said it’s sanctioning Khuzestan Steel Company, Iran's largest steel producer. The Treasury Department said Iran's metals sector generates "several billion dollars in revenue annually."

The U.S. is also targeting the Iranian carmaker Bahman Group for its role in making vehicles used by the Islamic Revolutionary Guard Corps for military operations.

The sanctions also target people who work for Iran-based drone manufacturers, including executives of the Mado Company, which the U.S. says produced drone engines used in Iran's Shahed UAVs. The U.S. also sanctioned members of the IRGC who it says help supply proxy groups, like the Houthis in Yemen, with drones that have attacked U.S. service members in the Red Sea.

Yellen added that the U.S. would "continue to deploy" sanctions to counter any further action by Iran, with the goal of making it harder and more expensive for Iran to undertake destabilizing actions.

President Joe Biden said in a statement that these sanctions are "holding Iran accountable."

Biden emphasized that the sanctions are in coordination with the international community, and he said the other G7 countries are committed to increasing "economic pressure" on Iran alongside the U.S.

Biden said he has instructed his team to continue to impose sanctions that will degrade Iran's military capabilities.

Biden also reiterated his ironclad support for Israel, and issued a warning to Iran and those who "enable" Iran's attacks.

"We are committed to the security of our personnel and partners in the region," Biden said. "And we will not hesitate to take all necessary action to hold you accountable."

-ABC News’ Michelle Stoddart and Justin Gomez