Shifting sands

Having found that Iraq didn't have nuclear weapons but did show incontravertible proof of possessing the intention to make them, it appears that we should excuse some intelligence dossiers having a word or two out of place. Or even just a letter: didn't they mean Iran?
The U.S. wants to impose sanctions on Tehran for pursuing a nuclear energy policy that could allow arms research. There is no claim that Iran has instigated a weapons programme, but they do seem to possess that sanctionable intent.
European efforts to migrate Iran to more advanced nuclear energy techniques that wouldn't be suitable for weapons have been met with dismay by the U.S. State Department, who fear that this will give Iran time to develop a bomb.
Of course there are few qualms expressed about Pakistan or Israel, who have implemented this technology already and tested it. The message seems to be, if you want a nuclear weapon, you'd better not show it until you've actually developed it (and the means to fire it into a neighbouring country).