Iraq: Car bomb kills at least 15 in Baghdad

At least 21 other people, including an American soldier and seven members of a Sunni family, were killed Thursday in Baghdad With sectarian violence on the rise in Baghdad, the US command boosted the number of armed patrols in the capital from 12,000 in February to 20,000 since the beginning of March, Maj. Gen. Rick Lynch told reporters. Lynch said the increase provides a "more visible presence for the security forces in the streets of Baghdad," which he said insurgents consider their "center of gravity" to stop formation of a new unity government.