British Prime Minister Theresa May (L) greets Colombia's President Juan Manuel Santos in Downing Street, central London on November 2, 2016, on the second day of the President's State Visit. Santos will hold talks with Prime Minister Theresa May at Downing Street on Wednesday, before heading to Belfast on Thursday to meet key figures from the Northern Ireland peace process. / AFP / Justin TALLIS (Photo credit should read JUSTIN TALLIS/AFP/Getty Images)

British Prime Minister Theresa May (L) greets Colombia's President Juan Manuel Santos in Downing Street, central London on November 2, 2016, on the second day of the President's State Visit.
Santos will hold talks with Prime Minister Theresa May at Downing Street on Wednesday, before heading to Belfast on Thursday to meet key figures from the Northern Ireland peace process. / AFP / Justin TALLIS        (Photo credit should read JUSTIN TALLIS/AFP/Getty Images)