probably the best the US & EU can do right now is provide support to dissidents in Iran - because that is Irans weakness. There are an awful lot of young people there who would rather have a western lifestyle, and despise the revolutionary guard.

currently IRan is not in any violation of NPT, they are in fact allowed to enrich uranium. (ONe wonders why the US should insist on compliance of others with NPT when the US has recently opted out of the ABM treaty and has been developing small scale bunker busting nukes) -

Why is a nuclear armed IRan such a threat, is it because its an ISlamic nation? Pakistan has nuclear weapons (plenty of terrorists have come from Pakistan) and it doesnt seem to be an issue.

its a little known fact but a couple of years ago Pakistan and India almost had a nuclear exchange - after an attempted terror attack on Indias govt assembly.