Kurdish leader Massoud Barzani votes in Iraq’s constitutional referendum in the northern city of Arbil October 15, 2005. Iraqis headed to the polls in an historic referendum on Saturday, with up to 15 million eligible voters deciding on a controversial new post-Saddam Hussein constitution that its backers hope will unite the torn country. Amid intense security, including a ban on all traffic, voters flowed on foot to polling stations across Baghdad as they opened at 7 a.m. (0400 GMT). They are due to close at 5 p.m., unless attacks cause delays and some are kept open longer. REUTERS/Azad Lashkari – RTR19GYD