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

President Donald Trump took to his social media platform on Sunday night to further detail the U.S. strikes against Iran's nuclear facilities.

"Monumental Damage was done to all Nuclear sites in Iran, as shown by satellite images. Obliteration is an accurate term!" the president wrote on Truth Social.

Several B-2 bombers were used in strikes on three of Iran's nuclear facilities -- Fordo, Natanz and Isfahan. More than 125 aircraft participated in the mission, including seven B-2 Spirit stealth bombers, according to U.S. officials.

Trump did not mention which location he was specifically referring to, but said, "The white structure shown is deeply imbedded into the rock, with even its roof well below ground level, and completely shielded from flame."

"The biggest damage took place far below ground level. Bullseye!!!" Trump added of the strikes.

-ABC News' Michelle Stoddart

In an early morning message local time, Iran’s supreme leader, Ayatollah Ali Khamenei, said the "punishment" of Israel will continue.

Khamenei did not mention the United States or President Donald Trump in his statement.

"The Zionist enemy has made a grave mistake, committed a great crime; it must be punished and is being punished; it is being punished right now," Khamenei wrote.

-ABC News' Will Gretsky

Senior FBI and Homeland Security officials hosted a conference call with some of the nation's governors and top law enforcement officials to discuss how the U.S. missile strikes in Iran impact an already dangerous threat environment, sources told ABC News.

The call included hundreds of state and local law enforcement officials from around the country.

An FBI official said that the agency's "posture is going to be enhanced," with the FBI asking more personnel to be in the office, and continuing to "canvas sources" and monitoring intelligence.

Sources described the call with governors as short, and without a lot of specifics, saying there is currently no specific intelligence of a direct, credible threat against the U.S. homeland. It was meant to ensure that states are aware of the current threat environment and to encourage them to reach out to relevant state agencies, infrastructure partners and others who may be at risk, sources said.

The calls come after Homeland Security issued a bulletin calling on the public to report anything suspicious to officials with DHS Secretary Kristi Noem stating flatly that what’s happening in Iran brings the potential for increased threats to the homeland in the form of "possible cyberattacks, acts of violence and antisemitic hate crimes."

-ABC News' Mike Levine, Katherine Faulders and Luke Barr

The State Department has issued a new worldwide caution alert prompted by the conflict between Israel and Iran, saying there is "potential for demonstrations against U.S. citizens and interests abroad."

“The conflict between Israel and Iran has resulted in disruptions to travel and periodic closure of airspace across the Middle East.  There is the potential for demonstrations against U.S. citizens and interests abroad. The Department of State advises U.S. citizens worldwide to exercise increased caution,” the alert reads.

Earlier this month, the State Department issued a regional alert related to the conflict, advising Americans in North Africa and the Middle East to exercise increased caution.

In October 2023, the U.S. issued a similar worldwide caution alert stemming from the Oct. 7 attacks on Israel and ensuing military campaign in Gaza.

-ABC News' Shannon Kingston