The busiest square in Tehran is dominated by an enormous billboard with a drawing of a young man in the uniform of the Revolutionary Guards Corps, extending his hand to invite Iranians to follow his path. Underneath the image, teenagers line up, flashing victory signs, as they take selfies with the placard in the background.
In life, the man on the billboard, 26-year-old Mohsen Hojaji, was just as anonymous as the thousands of other Iranians who have rotated in and out of war zones in Iraq and Syria in recent years. But after having been taken prisoner, videotaped and later