Iran as a nuclear power -- not inevitable after all?

Was Douglas Davis correct about Iran -- are US and Israeli forces trying to sabotage its nuclear facilities from the ground? An article in the new issue of the New Yorker by Seymour Hersh apparently claims

The United States has been conducting secret reconnaissance missions inside Iran to help identify potential nuclear, chemical and missile targets...
The article... said the secret missions have been going on at least since last summer with the goal of identifying target information for three dozen or more suspected sites.
Hersh quotes one government consultant with close ties to the Pentagon as saying, "The civilians in the Pentagon want to go into Iran and destroy as much of the military infrastructure as possible."

Ah, nothing like secret missions the entire world knows about....