potential timeline g j 1,000 kg per year r k Natanz enrichment complex Natanz enrichment complex in under two months nukes in two months h i t f c Natanz enrichment complex w «Iran's Nuclear Timetable» d «Iran's Nuclear Timetable» already operating Natanz enrichment complex p enough enriched-uranium stock n b a Natanz enrichment complex u] s enough enriched-uranium stock e q] "Iran's Nuclear Timetable" in under two months v 1,000 kg per year o nukes in two months l enough enriched-uranium stock m nukes in two months "Iran's Nuclear Timetable" potential timeline enough enriched-uranium stock Natanz enrichment complex Natanz enrichment complex