Friendly fire may have killed U.S. troops in Afghanistan: Pentagon

By Idrees AliWASHINGTON (Reuters) - Two U.S. special operations forces soldiers killed in eastern Afghanistan on Wednesday may have been struck by friendly fire in an operation targeting the emir of Islamic State militants in Afghanistan, the Pentagon said on Friday.Pentagon spokesman Captain Jeff Davis told reporters that the military was investigating whether the two troops may have been killed by ground fire, either by American forces or Afghan commandos taking part in the raid, though it app