[Don Joe]

"I think the critical mass of a nuke is somewhere around 80-90 lbs. Then add in the weight of the bomb itself. So how could the suitcase weigh 60 lbs?"

Now subtract the weight of the core material no longer needed when they reinforce it with tritium.

Oops!

[Seattle-ite Nottagay]

Isn't this kind of device easily detected? I thought they could track even small amounts of nuclear material, even by sattelite.