>> israel wants to see iran stop enrichi enrichi enriching all together. >> it's important they stop enrichment to impurity for the medical reactor. it's technologically a short step away from weapons material. one expert believes iran should diffuse all manufacturing sites. >> they could continue making them. if the deal falls apart, then they could emerge and deploy those fuses quickly. >> david al bright believes it's critical in the context of any deal iran address all unanswered questions about the chemical weapon program the watchdog expects it had at one time on the research and development level. this is a point he hopes won't