this post was submitted on 19 Mar 2025
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suitcase nukes pretty easy to access for nations that have different friends than US.
They weren't real and still aren't. You can make a nuke small enough to fit in, say, a shell (and the US did), but the minimum critical mass is still way too heavy to carry around. That's just physics. Uranium and plutonium are both significantly denser than lead.
It's kind of wild you think any nuclear weapon would be "easy to access".
The minimum critical mass of plutonium is around 20 pounds which is not unreasonable and being denser than lead is actually good since it allows it to be very compact
IIRC you have to factor in the explosive lenses and various neutron reflectors as well, and to get all the way to the theoretical minimum you basically need literal tons of that other stuff. Backpack/wheeled luggage/shell weight is what's public, and seems about like about as good as you can get in practice.
There's exotic choices of fission fuel with a smaller critical mass, but they're also aggressively radioactive and tend to really really difficult to produce, to the point of impracticality.
Honestly briefcaseness wasn't the main problem with OP, but it was worth commenting on.