Middle East An Ahmadinejad comeback? Why rumors are a warning shot for Iran's Rouhani.

The possibility that Iran's controversial former president could again become a political force may be minimal, but just the idea of it, analysts say, is a tool to keep President Rouhani in check.

By , Staff writer

Scott Peterson/Getty Images/The Christian Science Monitor

The morning is chilly and still dark at 6:25 a.m. when the first disciple arrives at “Square 72,” the cramped, tree-lined roundabout in eastern Tehran where Iran’s lightning-rod former president lives humbly – and plots an improbable political comeback.