The morning after Iran’s June 12 presidential election, Iranians booted up their computers to find Fars News, the online mouthpiece of the Islamic Republic’s security apparatus, heralding the dawn of a “third revolution.” Many an ordinary Iranian, and many a Western pundit, had already adopted such dramatic language to describe the burgeoning street demonstrations against the declaration by the Ministry of Interior that Mahmoud Ahmadinejad, the sitting president, had received 64 percent of the vote to 34 percent for his main challenger, Mir Hossein Mousavi.