US Republican presidential candidate Senator John McCain (R-AZ) tours the streets of Haditha City, Iraq March 16, 2008. Picture taken March 16, 2008. REUTERS/Cpl. Shawn Coolman/Regimental Combat Team-5, 1st Marine Division Public Affairs/Handout (IRAQ). FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS.