WASHINGTON: The United States' top military officer says it cannot be successful in Afghanistan if large numbers of civilians keep getting killed amid the conflict. Admiral Mike Mullen, chairman of the Joint Chiefs of Staff, pointed to this month's disputed U.S. airstrikes in Farah province which led to notes of regret from President Barack Obama and other U.S. officials.Dozens of civilians reportedly died in the incident in the air strikesMullen also refused to rule out strikes from unmanned drones, often used to launch missiles at militant hideouts.
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