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HAVANA, CUBA - AUGUST 24: Rodolfo Benítez, guarantor of Cuba (R), and Humberto de la Calle, head of Colombian government peace delegation talk during the sign of the final peace agreement for Colombia after 52 years of war, on August 24, 2016 in Havana, Cuba. (Photo by Ernesto Mastrascusa/LatinContent/Getty Images)

HAVANA, CUBA - AUGUST 24: Rodolfo Benítez, guarantor of Cuba (R), and Humberto de la Calle, head of Colombian government peace delegation talk during the sign of the final peace agreement for Colombia after 52 years of war, on August 24, 2016 in Havana, Cuba. (Photo by Ernesto Mastrascusa/LatinContent/Getty Images)