There is an enormous difference between having the theoretical knowledge of how to build a nuclear weapon, access to the nuclear elements required and the necessary engineering skills to do so. If there is a GENUINE fear that Iran will use nuclear technology in a military fashion, then do not focus on the nuclear materials, which could possibly be obtained by ourchase, or even a weapon itself that could be provided by another state. It is the delivery system that is the most crucial element and whether missile or airplane, Iran does not have either.
Australian, Thai journalists acquitted of defaming Thai navy (AP)
from the article: Iran to give UN better access to nuclear sites, say diplomats