At least five US soldiers were killed in four separate attacks across Iraq on Thursday, most of them by roadside bombs, the US military has said.
Two soldiers were killed when their patrol hit a roadside bomb in the western half of Baghdad on Thursday, the military said in a statement released on Friday.
An interpreter was also killed and another soldier was wounded in the blast.
Another roadside bomb exploded early on Thursday next to an army vehicle, killing one soldier and wounding another in the central Iraqi province of Salaheddin, the military said.
Another US soldier was killed by small arms fire in Diyala province.
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A roadside bomb meanwhile exploded next to a US military vehicle killing another soldier in the northern province of Nineveh.
The military also announced the death of a soldier on Tuesday in Baghdad from a roadside bomb.
The US military said it anticipated it would suffer more casualties when it launched a security crackdown three months ago, pouring thousands of extra troops into Baghdad and other areas.
The crackdown is seen as a last-ditch attempt to drag Iraq back from the brink of all-out sectarian civil war between Shia and Sunni armed groups.
The announcements came after the US congress approved $95 bn in new funds for the wars in Iraq and Afghanistan without any timetable for withdrawing troops.