Thanks to Q Khan, anyone can have and probably do have a low yield nuke. While Pu can reach a critical mass with much less weight U 238 will do so with less than X lbs. bearded bruce will know the exact number.

Who really believes that the nuclear genie can be put back in the bottle. Hell, even Alabama has the bomb.

The argument of containing any country that is seeking nukes is moot.
Pakistan has it. We DO seem to want to keep the oil bearing countries from having it hmmmm

After the nuke war in the middle east we will be driving with lead lined gas tanks and be told FOX news that the low radioactivity of our gasoline is of no conern or risk ;< )