New satellite images of the Mount Mashkush region near the Natanz nuclear facility show large-scale construction activities being carried out there. Analysts at the Center for Strategic and International Studies say the underground facility “probably” is a safe haven for Iran's nuclear program.

New satellite images of the Mount Mashkush region near the Natanz nuclear facility show large-scale construction activities being carried out there. Analysts at the Center for Strategic and International Studies say the underground facility “probably” is a safe haven for Iran's nuclear program.