The head of the International Atomic Energy Agency said that as a result of Israeli and U.S. strikes, the agency has “seen extensive damage at several nuclear sites in Iran,” including those three. Israel claims it has set back Iran’s nuclear program by “many years.”

Andrew Harnik/ The Trump administration insists the answer is an unqualified yes — the nuclear sites were “completely and totally obliterated,” according to President Donald Trump. Yet questions remain about the efficacy of the attacks after an early intelligence assessment from the Defense Intelligence Agency reportedly concluded that the strikes may have only set back Iran’s nuclear program for months.

The big question following U.S. and Israeli attacks on Iran’s nuclear program is: What remains of it? U.S. President Donald Trump has said three targets hit by American strikes were “obliterated.” His defense secretary said they were “destroyed.