LONDON, UNITED KINGDOM - NOVEMBER 01: Britain's Queen Elizabeth II (R) and her husband Britain's Prince Philip, Duke of Edinburgh (L), pose with Colombia's President Juan Manuel Santos (2R) and his wife Colombia's First Lady Maria Clemencia Rodriguez ahead of a State Banquet at Buckingham Palace on November 1, 2016 in London, England. Colombian President Juan Manuel Santos, who won this year's Nobel Peace Prize for his efforts to implement a peace deal with FARC rebels, begins a state visit to Britain that includes a trip to once conflict-ridden Northern Ireland. (Photo by Adrian Dennis - WPA Pool/Getty Images)