US military says a BLACK HAWK helicopter went down northern Iraq, killing all 14 soldiers onboard. Officials say it was almost likely a mechanical problem and not an enemy attack.

• 美军宣布:一架黑鹰直升机在伊拉克北部坠落,机上14名士兵全部丧生。官方声称:这次事故很可能源于机械故障,而非恐怖袭击。