Dhaka, June 30 -- CIA Director John Ratcliffe has told U.S. lawmakers that recent American military strikes destroyed Iran's only metal conversion facility, delivering a significant blow to Tehran's nuclear program that could take years to recover from, a U.S. official said Sunday.

Speaking on condition of anonymity due to the classified nature of the information, the official confirmed Ratcliffe's remarks were made during a closed-door briefing with members of Congress last week.

The revelations come amid continued scrutiny from Democratic lawmakers over the extent of the damage inflicted by U.S. and Israeli strikes, which preceded last Tuesday's ceasefire with Iran.

"It was obliteration like nobody's ever seen before," President Dona...