The rise in violence in Iraq will likely delay President Obama's plans to withdraw troops from the war-torn country by at least a month. On Tuesday, a car bomb killed seven people in Baghdad, where sectarian fighting is on the rise. All American combat forces are supposed to leave Iraq by August 31. Timely withdrawal from the country was a key component of Obama's presidential campaign. General Ray Odierno was supposed to send 12,500 soldiers home this month to begin the pullout. For now, U.S. patrols in Baghdad are rare, as combat forces tend to stick to their bases.