"...According to academic experts in the West, Iran needs around 220 to 250 kilograms of uranium enriched to 20 percent to make one atomic bomb. The rate of its uranium enrichment to this level is now between 12 and 15 kilograms a month.
But although Iran has already produced about 190 kilograms of 20-percent enriched uranium, almost 100 kilograms of that quantity has been diverted to scientific use. Every time Iran enriched more than 130 kilograms to 20 percent, it diverted 15 or 20 kilograms to scientific use.
If Iran still had 190 kilograms, it would now be very close to the "red line" Netanyahu noted in his address - 90 percent of the progress toward the ability to manufacture one nuclear bomb. "