What do we do?

THIS is where using WMD as our sole reason to take out Saddam bites us on the butt. Iran is not only pursuing nukes but wiping our face in it. No renegade wannabe Hitler like Saddam, the ruling theocracy of Iran is much closer to the radical Islamicists than he ever was.

Do we:

Do nothing, and;
-hope (pretend?) that Europe can handle it?
-hope (?) that the UN will handle it?
-who cares?

have the public and "secret" nuke sites taken out by bombardment; by
-ourselves?
-a proxy (Turkey, Isreal, etc.) (Iraq?!)

Ground invasion?

Or are there any suggestions?

Pete