Bomb kills 4 US soldiers in Baghdad, raising US death toll in war to 4,000

A roadside bomb killed four US soldiers in Baghdad on Sunday, the military said, pushing the overall American death toll in the five-year war to at least 4,000. The grim milestone came on the same day that rockets and mortars pounded the US-protected Green Zone, underscoring the fragile security situation and the resilience of both Sunni and Shiite extremist groups despite an overall lull in violence. A Multi-National Division - Baghdad soldier also was wounded in the roadside bombing, which struck the soldiers' patrol vehicle about 10 p.m. in southern Baghdad, according to a statement. Identities of those killed were withheld pending notification of relatives.