Former U.S. President Barack Obama talks with newly-inaugurated U.S. President Donald Trump after Donald Trump was sworn in as the 45th President of the United States in Washington D.C., the United States, on Jan. 20, 2017. (Xinhua/Bao Dandan)
Former U.S. President Barack Obama talks with newly-inaugurated U.S. President Donald Trump after Donald Trump was sworn in as the 45th President of the United States in Washington D.C., the United States, on Jan. 20, 2017. (Xinhua/Bao Dandan)
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