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French President Francois Hollande lays a wreath at the Tomb of the Unknown Soldier at the Arc de Triomphe in Paris on November 11, 2015 during the Armistice Day commemorations marking the end of World War I. AFP PHOTO / POOL / FRANCOIS MORI (Photo credit should read FRANCOIS MORI/AFP via Getty Images)

French President Francois Hollande lays a wreath at the Tomb of the Unknown Soldier at the Arc de Triomphe in Paris on November 11, 2015 during the Armistice Day commemorations marking the end of World War I. AFP PHOTO / POOL / FRANCOIS MORI        (Photo credit should read FRANCOIS MORI/AFP via Getty Images)