U.S. Secretary of Defense Ashton Carter speaks during a press conference held with Britain's Secretary of State for Defence Michael Fallon, at Lancaster house in London, Friday, Oct. 9, 2015. (AP Photo/Alastair Grant)
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U.S. Secretary of Defense Ashton Carter speaks during a press conference held with Britain's Secretary of State for Defence Michael Fallon, at Lancaster house in London, Friday, Oct. 9, 2015. (AP Photo/Alastair Grant)
