Under Secretary of State for Public Diplomacy and Public Affairs Tara Sonenshine, @TSoneshine, participates in a Global Twitter Q and A on December 5, 2012. [State Department photo/ Public Domain]

Under Secretary of State for Public Diplomacy and Public Affairs Tara Sonenshine, @TSoneshine, participates in a Global Twitter Q and A on December 5, 2012. [State Department photo/ Public Domain]

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