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THE HAGUE, NETHERLANDS - MARCH 23:Dutch Prime Minister Mark Rutte meets with the President of the People's Republic of China Xi Jinping at the Catshuis March 23, 2014 in The Hague, Netherlands. The Nuclear Security Summit, held March 24-25, will be attended by world leaders and is aimed at preventing nuclear terrorism. (Photo by Valerie Kuypers-Pool/Getty Images

THE HAGUE, NETHERLANDS - MARCH 23:Dutch Prime Minister Mark Rutte meets with the President of the People's Republic of China Xi Jinping at the Catshuis March 23, 2014 in The Hague, Netherlands.  The Nuclear Security Summit, held March 24-25, will be attended by world leaders and is aimed at preventing nuclear terrorism. (Photo by Valerie Kuypers-Pool/Getty Images