The Israel Defense Forces said in a statement posted to X on Monday morning that it detected the launch of a new barrage of ballistic missiles from Iran, urging citizens to head to safe areas and shelters.
"The defense systems are working to intercept the threat," the IDF said.
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
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