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.

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

A senior Israeli official told The New York Times on Thursday that some of Iran’s highly enriched uranium stockpiles likely survived the recent United States and Israeli strikes on Tehran’s nuclear facilities — and may still be accessible to Iranian nuclear scientists.