Several weeks ago, Iran announced it had invited a number of nations to tour the uranium enrichment facility near Natanz, and the heavy water facility near Arak.
The barrage came only days after North Korea revealed a new uranium-enrichment facility to American scientists.
Instead, on the same day, Pyongyang let it be known it was willing to admit United Nations nuclear inspectors into its recently unveiled uranium-enrichment facility.
China's case has been weakened not just by the attack, but by North Korea's unveiling of a uranium-enrichment facility that it has built despite UN sanctions.
South Korea's foreign ministry said Seoul will study China's invitation carefully because of concerns about North Korea's recent revelation of having a new uranium enrichment facility.
Iran's semi-official student news agency( I A) says nuclear engineers have begun operating a second network of centrifuges at a uranium enrichment facility.
