HANOVER, GERMANY - APRIL 25: German Chancellor Angela Merkel greets France's President Francois Hollande, (2nd R) U.S. President Barack Obama, Prime Minister of Great Britain David Cameron (L) and Prime Minister of Italy Matteo Renzi (R) at Schloss Herrenhausen palace on April 25, 2016 in Hanover, Germany. (Photo by Guido Bergmann/Bundesregierung via Getty Images)
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