Iran has two known underground nuclear enrichment sites, the one Israel attacked on the first day of its assault at Natanz, and another at Fordo. Both sit south of Tehran in central Iran, but Fordo has long been the Iranian nuclear facility of most concern to international monitors and experts. Buried deep in a mountain, Fordo is where many analysts believe Iran has concealed clandestine efforts to work toward a nuclear weapons capability. There have been no reported Israeli strikes on the Fordo enrichment facility. -snip- "Fordo has always been a major concern because of its location and because of...