Iran has invited the U.N.'s nuclear agency to inspect its underground and still-unfinished uranium-enrichment site and downplayed the facility’s secrecy on Saturday. Speaking on Iranian television, the country’s vice president, Ali Akbar Salehi, said he was “astonished” there was controversy over the site, because he said his country complied with U.N. rules by informing the agency six months before a uranium-enrichment facility becomes operational. "This new facility, God willing, will become operational soon and will blind the eyes of the enemies," a close aide to Iran’s supreme leader told the Fars news agency. Salehi said the site was a “precautionary measure” to guard the country from attack. Hillary Clinton said Saturday that she welcomed Iran's offer, while President Obama said he remained open to "serious, meaningful dialogue" to resolve the issue at talks in Geneva on Thursday. The newly revealed facility is reportedly located in the mountains near the holy city of Qom, and is heavily guarded.