Is this not fairly likely in the US with Mexican Spanish or/and Canadian/Cajun French?

No development required, I think they can open a drawer somewhere and pick one of several soviet designs. If they want a nuke, they can build one right away.

It would cost them the support of their allies, however, and they cannot afford that.

It’s saber rattling.

Und jetzt alle! “Ich hab ne Zwiebel aufm Kopp, ich bin ein Döner 🎺”

Oder vielleicht lieber doch nicht, wenn ich so drüber nachdenke.