From Fox News:

BAGHDAD — A roadside bomb killed four U.S. 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 a day when at least 61 people were killed across the country.

Rockets and mortars pounded the U.S.-protected Green Zone, underscoring the fragile security situation and the resilience of both Sunni and Shiite extremist groups despite an overall lull in violence.

The soldiers with Multi-National Division — Baghdad were on a patrol when their vehicle was struck at about 10 p.m. in southern Baghdad, the military said. Another soldier was wounded in the attack.

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