Iran's former nuclear negotiator and presidential candidate, <a gi-track='captionPersonalityLinkClicked' href=/galleries/search?phrase=Hassan+Rouhani+-+Politiker&family=editorial&specificpeople=641593 ng-click='$event.stopPropagation()'>Hassan Rouhani</a>, speaks to his supporters during a campaign rally on May 30, 2013 in Tehran, Iran. Rohani, 64, who is viewed by some as a moderate, and the other seven presidential candidates are due to come face-to-face in a televised debate tomorrow. The election is scheduled for June 14, 2013.