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 deeply buried stocks of enriched uranium at one Iranian nuclear facility hit by the U.S. military are potentially retrievable, a senior Israeli official said.And the agency that built the U.

Iran remains 'obsessed' with building nuclear deterrent despite damage incurred from U.S. strikes last month, but suggests its still open to negotiation in a move that one expert warns is a ploy to buy time.