DV82XL has made a compelling case on the non-significance of the proliferation issue. If readers are interested I could try to assemble the arguments. For today, this latest comment on BNC gets right to the bottom line:
We have to get it through everyone’s head that there is no stopping any nation that is intent on fabricating nuclear weapons short of military intervention. Endless hand wringing about vulnerabilities in the fuel cycle are a waste of time and effort.
Furthermore, and country that has the technical wherewithal to fabricate MOX or PuThO fuel or has stocks of Pu that need re-burning in the first place, is a nuclear weapons state, or has had the ability to make nuclear weapons for some time and has chosen not to.
Proliferation is not a technical issue.