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

President Donald Trump appeared to float the idea that there should be a change in leadership in Iran in a new social media post on Sunday. Trump said that though it is "not politically correct" to discuss a regime change, he criticized the current leadership in Iran and also asked, "Why wouldn’t there be a Regime change???"

"It’s not politically correct to use the term, “Regime Change,” but if the current Iranian Regime is unable to MAKE IRAN GREAT AGAIN, why wouldn’t there be a Regime change???," Trump wrote in the brief post on his social media platform, Truth Social.

"MIGA!!!," Trump added in the post, a twist on the MAGA term that he coined.

In an earlier post on Sunday, Trump touted the success of the U.S. strikes on Iranian nuclear sites.

"The damage to the Nuclear sites in Iran is said to be 'monumental.' The hits were hard and accurate," Trump wrote.

-ABC News' Michelle Stoddart