Looks like the Iran nuclear situation is starting to go the way of WMD's. The CIA has sent a list of suspected weapon sites to the atomic energy investigators in Iran only to discover they don't exist. Info that I recall hearing just a few months ago indicates that the type of enrichment that Iran is doing is for energy purposes only. That was the info from countries that supplied Iran with the technology. Now you might consider the possibility that they could make a dirty bomb out of such materials, but then stop to consider how difficult it would be to sneek such an item into another country.