LONDON, UNITED KINGDOM - NOVEMBER 01: Colombia's President Juan Manuel Santos delivers an address to members of both the House of Commons and the House of Lords, in the Robing Room at the Palace of Westminster 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)