alt Hacker NewsThat facility was a nuclear research facility for civilian, military and medical use. Note that military doesn't mean weapons. Iran getting nuclear submarine would increase their threat level. In any case, Iran have a fatwa against developing nuclear bombs (a fatwa is a law edicted by a religious leader, and not respecting it would make you sinful and rebellious, and in a theocratic regime, often end in prison). The fatwa isn't reversed yet afaik, but the US killed the mufti who declared it, so I don't know how it applies.
But anybody saying Iran was working on a bomb is probably misinformed or lying imho.
There isn't a non-military, non bomb use for the amount of Uranium that Iran was enriching up to the levels that they were doing so.
All the things that you talked about do not require doing what Iran was doing. Meaning that... the only motivation left would be the 1 single thing that does require that much enrichment to those levels.
Hitting this from another angle, it doesn't make any strategic sense as for why Iran would sacrifice all that it is throwing away, just to get some medical research benefits. That would be a poor deal, and Iran isn't stupid.