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

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

Iran's ambassador to the United Nations, Amir Saeid Iravani, condemned the United States' attacks on Iran during a meeting with the UN Security Council.

Iravani said the strikes on Iran's nuclear sites used the Non-Proliferation Treaty (NPT) as a "political weapon," calling it "aggression and unlawful action."

The ambassador warned that Iran's response would be determined by its armed forces. Iravani also denounced the assassination of Iran's General Qasem Soleimani.

"The timing, nature and the scale of Iran's proportionate response will be decided by its armed forces," Iravani said, adding, "All U.S. allegations against Iran are unfounded, with no legal basis and politically motivated."

-ABC News' Will Gretsky

President Donald Trump said in a new post to Truth Social on Sunday that the pilots of the B-2 bombers that participated in strikes on Iranian nuclear facilities have returned to U.S. soil.

"The GREAT B-2 pilots have just landed, safely, in Missouri. Thank you for a job well done!!!," Trump wrote.

More than 125 aircraft participated in the mission, including seven B-2 Spirit stealth bombers, which were launched from the continental U.S. and refueled multiple times in midair as they flew 18 hours to reach their targets, according to Gen. Dan Caine, chairman of the Joint Chiefs of Staff.

Other aircraft that participated in the mission included B-2 bombers used as decoys, as well as refueling tankers, fighter escorts, and drones that provided Intelligence, surveillance and target acquisition, according to U.S. officials.

-ABC News' Michelle Stoddart