A senior Israeli official says Israel believes deeply buried stocks of enriched uranium at one Iranian nuclear facility hit ...

Officials in Israel are acknowledging that some enriched uranium may have survived the powerful U.S. strikes on Iranian nuclear facilities last month.

The official suggested that the Iranians might still be able to gain access to Isfahan, but it would be hard to remove any of ...

Portions of Iran’s near weapons-grade enriched uranium wasn’t entirely destroyed in US strikes and the stockpiles could ...

The assessment came as experts are trying to determine how long it would take Iran to rebuild its nuclear program in the aftermath of U.S. and Israeli strikes.

There is a chance that much of Iran's highly enriched uranium survived Israeli and U.S. attacks because it may have been ...

Israel believes buried enriched uranium at Iranian nuclear sites hit by U.S. strikes is retrievable, raising concerns.

Iran said it spirited away 880 pounds of enriched uranium before the U.S. bombed its nuclear sites.

Over the years, as Iran built up its underground nuclear facilities and centrifuges, it amassed a large, 880-pound stockpile of uranium enriched to 60 percent, near bomb grade.

U.N. inspectors in Iran face a conundrum: How can you tell if enriched uranium stocks, some of them near weapons grade, were buried beneath the rubble or were secretly hidden away?

Uranium enrichment involves removing uranium-238 and increasing the proportion of uranium-235, which supports the fission chain reaction needed for nuclear power and weapons.