How does that factor in here right now? We haven't used or threatened to use nukes, and at least the public case made is in part that Iran is trying to get nukes and shouldn't.
I say "public case" specifically here, I don't buy that justification but it is still the one being used.
How does it factor in? How doesn't it?
If Iran had deployable nukes, would they get invaded?
Name a country that got bombed to credibly destroy the government, and had nukes. I'll wait.