Dr. Conca reports that last week, the U.S., Great Britain, France, Germany, Russia and China (the P5 plus 1 group) reached an interim deal with Iran to stop their nuclear weapons program. Four key provisions were obtained in this deal- no enrichment of U above 5 per cent U-235, and all highly enriched materials, some as high as 20 per cent U-235, must be blended down to less than 5 per cent or altered to a form not usable for weapons, no additional centrifuges are to be installed or produced, and three-fourths of the centrifuges at Fordow and half of the centrifuges at Natanz will be inoperable, stop all work on the heavy-water reactor at Arak, provide design details on the reactor (which could be used to produce Pu for the other type of atomic weapon) and do not develop the reprocessing facilities needed to separate Pu from used fuel, full access by IAEA inspectors to all nuclear facilities, including daily visitation to Natanz and Fordow, and continuous camera surveillance of key sites.