nuclear program just before major talks are about to take place. the u.n. watchdog group, the iaea, reporting just moments ago that iran is installing advanced centrifuges at its main enrichment plant only days before world powers are resuming these long-awaited talks with iran. joining us now by phone, mark garrett who now works for the defense for -- the foundation fr the defense of democracy. what does this news mean? >> the iranians have been telling us for a bit now that they, in fact, had perfected these advance centrifuges, and they are now going to show us. and they intend to demonstrate, i think convincingly, that they can up the ante, that they can produce more enriched uranium more rapidly and thereby, essentially i think, shut down the notion that they're going to give up their uranium