Reading war-game outcomes is not a coordinated barrage of airstrikes. I know exactly what you mean, but I don't think for a minute that it would be an actual war. We could literally just bomb their known facilities in a couple, or a few days...and probably set them back for years, or for good. Frankly, we have done everything else BUT rain destruction upon their facilities, it's time for a different approach.
I don't believe it's too late to deny them the bomb, and I don't think that they would have to resources to keep rebuilding, especially since any of those kinds of materials going to Iran would be heavily tracked, making it easier to take out any future endeavors on their part. As far as being "part of the equation," we write the equation - that's something Iran hasn't quite grasped, or maybe it's just Khamenei.
Iran has not been upfront, that's just not accurate...they are probably one of the LEAST upfront nations in the world. Thus, they have reduced themselves to a reputation of state-sponsored terrorism and over-the-top rhetoric. The rest of the middle east does not want to see a nuclear Iran, that is another MAJOR component of this issue, because we cannot afford to lose allies over allowing Iran to emerge as a regional hegemon with a propensity for terrorism that possesses WMD's. Just imagine what kind of shit we would be in if there WASNT a strong enough contingent in Pakistan to allow the US the presence we have there...potentially catastrophic. Now imagine those regional nations form a coalition and attack Iran...we are the only SANE way that this can be averted. Whether or not it seems "right" in the minds of many, it is simply the clearest route to take if there is no change in course from Tehran.