> can US "talk" with / use threats against iran and "make it a good guy"?

Problem is Iran leadership especially would need to retarded to trust any good guy promisses from USA.

I mean, USA breaks promisses to literally anyone, but it specifically bombed Iran already twice during negotiations. And its history involves usa turning hostile each time relationships seems to get better.

How can you play good guy with history like that? And with present of attacking literal own allies?

yeah that's why I said the whole operation is "all or nothing"