Do you actually need conventional explosives? I had the impression all they do is reliably stick the big hunks of radioactive material together in a big bomb that needs to be delivered at high speeds and detonate automatically. Wouldn't it be enough to quickly shove a cylinder into a bigger core, perhaps with a motor or even a tensioned spring?

That of course doesn't waive the issue of the amount of fissile material, or the fact it needs to be all put together (you can't spread it around a vest)

He’s talking about a dirty bomb. And, technically, that is quite possible and doable by the Iranians.

It’s a stupid assertion, yes; but the engineering is plausible.

JD should stick to fucking couches, not nuclear physics.

I mean, yeah, the Davie Crockett could fit in a back pack, a really big back pack

It is stupid for even more reasons than that. I've thought about it back when North Korea had pretend nuclear suicide bombers march on their military parade.

Even if somehow they manage to cram one in a backpack that is carriable by a person, there is no advantage whatsoever given the blast radius. You will have to use a vehicle of sorts to get near the enemy and more importantly away from your friendlies anyway. Whatever distance you can cover on foot afterwards won't make much of a difference. Might as well make it vehicle borne.

I mean, the W54 was small enough to be carried by a person and I don't think anyone wants even a 1kt device going off near them. So it's within the realm of possibility even if it does strain credulity as an actual goal Iran was working toward (let alone a solid justification for this bullshit).

Edit: the W54 weighed 51lb (23 kg).