A U.S. soldier of the 2nd Brigade, 1st Armour Division shakes hands with an Iraqi boy during a joint patrol with Iraqi army soldiers in Jamilla market in Baghdad's Sadr City July 13, 2008. Democratic White House hopeful Barack Obama said on Saturday comments by Iraqi leaders calling for a timetable for withdrawal of U.S. troops added weight to his stand in favor of such a timetable. REUTERS/Damir Sagolj (IRAQ)