Export controls don't work? Did I miss the news, North Korea bought an MERV tipped intercontinental ballistic missile from the 'free market'? Do they have therm

Export controls don't work? Did I miss the news, North Korea bought an MERV tipped intercontinental ballistic missile from the 'free market'? Do they have thermonuclear warheads? I am not convinced if we way we treated Iran is justified, but thats a different suvject. And after Ukraine, noone will. Ever give up nukes