Aamer Madhani.

CIA Director John Ratcliffe has told skeptical U.S. lawmakers that American military strikes destroyed Iran’s lone metal conversion facility and delivered a monumental setback to Tehran’s nuclear program that will take years to overcome. That’s according to a U.S. official who spoke on the condition of anonymity to discuss the sensitive intelligence. Ratcliffe also told lawmakers at a classified hearing last week that the intelligence community assessed the vast majority of Iran’s amassed enriched uranium likely remains buried at Isfahan and Fordo nuclear facilities. The head of the International Atomic Energy Agency says Iran’s capabilities have been “destroyed to an important degree” but “some is still standing.”