In order to get popular public support, a strike on Iran would need (assuming an Iranian nuke programme actually exists..) either a total admission by Iran, a truly collossal Iranian security ****up, or a 1km-wide crater in Jerusalem and/or Washingon.
They could get a nuke if they wanted one, but Iran's leaders aren't stupid. I still think its 70/30 perhaps 80/20 that they aren't pursuing nuclear weapons and are just rattling the west's cage.
Sad, but true. Life imitating art and all that.