U.S. Senators John McCain (R-AZ), Lindsey Graham (R-SC) (L) and General David Petraeus (R), U.S. Commander in Iraq, visit the Shorga marketplace and interacted with local merchants while walking the streets of Baghdad April 1, 2007. Photo taken April 1, 2007. REUTERS/Sergeant Matthew Roe/10th Public Affairs Operations Center/Handout (IRAQ). EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS.