71 killed in Israeli attack on Iran prison, official says

Ali Shamkhani, an adviser to Ayatollah Ali Khamenei, said in a post to X on Sunday that the American strikes on Iran's key nuclear facilities will not stop Tehran's nuclear program.

"Even assuming that the facilities are completely destroyed, the game is not over; the enriched materials, local expertise and politics will remain," Shamkhani said.

"Now, the political and operational initiative, along with the right to legitimate defense, lies with the side that plays smart and avoids indiscriminate fire," he added. "The surprises will continue!"

-ABC News' Joe Simonetti

The Israel Defense Forces said in a post to X on Monday morning that Israeli warplanes began a "wave of attacks on military targets in Tehran."

The strikes followed several waves of Iranian missile launches toward Israel.

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