Iran's Second Nuke Site?

Iran's nuclear program is again making the news cycles after the country admitted this week that it has built a second nuclear fuel processing plant, to complement the one at Natanz.

According to the New York Times, the admission by Iran came after it learned that western intelligence agencies knew of its existence, and indeed the US, UK and French leaders were just now on TV to accuse Iran of having concealed the plant from the International Atomic Energy Agency (IAEA) for all the years it was under construction.