The UN sanctions haven't worked in the past and sure won't work now no matter who is in the WH negotiating for em. They have no teeth. Anything with real teeth gets knocked down by Russia and China.
The are both in bed with Iran and are making money off Iran.
Don't think either country gives a rats ass about what the UN or USA wants. Don't thin they give a rats ass how Iran wants to use em either.
Don't think any of our leaders have the will or balls for military action in Iran so I think thats pretty much off the table despite the rhetoric.
Iran will get the Nuke as will NK and we will just have to hope that the nitwits don't plan to use em.