The U.S. military said some foreign fighters were believed among the insurgents killed in the first 48 hours of the assault, which began late Saturday in the border town of Qaim, about 200 miles west of Baghdad. At least three Marines were killed in the region, it said.

　　U.S. officials described the area as a known smuggling route and a haven for foreign fighters involved in Iraq's insurgency. The assault was the biggest U.S. offensives since the insurgent stronghold of Fallujah fell last fall.

　　Gunship是一个美国军事俚语，表示“武装直升机”，常用来支援地面部队，提供火力掩护。
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　　据悉，这是继6个月前围攻费卢杰以来，驻伊美军采取的最大规模作战行动之一，其主要目的是扫除伊拉克西北部靠近叙利亚边境地带的反美武装据点。美军称该地区已成为“外来武装分子走私武器的通道和避难所”。

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