US airstrikes on Iran set back the country’s nuclear program by one to two years, a Pentagon spokesman said, adding to uncertainty around the status of the country’s facilities after President Donald Trump said they’d been obliterated.

U.S. strikes on multiple Iranian nuclear facilities last month set back Tehran's nuclear program by about two years, Pentagon spokesperson Sean Parnell disclosed during a press briefing. "Iran is much further away today from a nuclear weapon than they were before the president took bold action to fulfill his promise to the American people,

Iran’s move will leave the International Atomic Energy Agency blind for now to any renewed nuclear work that Tehran is able to do and unable to verify the whereabouts of its large stockpile of already enriched uranium.

Iran on Wednesday officially suspended its cooperation with the UN nuclear watchdog, a move triggered by the unprecedented Israeli and US strikes on its nuclear facilities.