S enior Israeli officials are acknowledging that some enriched uranium may have survived the powerful U.S. strikes on Iran's key nuclear sites last month.

Israel believes a U.S. strike buried the enriched uranium under an Iranian facility, the official told reporters in Washington.

Initially US President Donald Trump claimed the operation was a total success, but officials on both sides of the Atlantic are now acknowledging that significant quantities of enriched uranium may have withstood the bombardment.