Questionable strategy

So, ordinarily I'd think Iran was insane to threaten the US over possible sanctions, as this kind of rhetoric backs up the US position that Iran is dangerous and shouldn't have nuclear arms capabilities. But you know what? Iraq tried to be compliant, and we invaded them anyways. US foreign policy has left rational axis of evil rulers with no clear motive to do what we'd wish them to, so we may be left with this crazy stuff for the foreseeable future.