Former Iranian premier Mir Hossein Mousavi shows his identification card as he registers his candidacy for the upcoming presidential election at the interior ministry in Tehran on May 9, 2009. Mousavi, who as premier steered Iran's economy through the brutal war with Saddam Hussein in the 1980s, registered as candidate for next month's presidential election. Mousavi, who has vowed to change Iran's "extremist" image abroad if he wins power, was the last of the four main candidates to register to stand in the June 12 vote. AFP PHOTO/ATTA KENARE (Photo credit should read ATTA KENARE/AFP/Getty Images)