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Cuban President Raul Castro (C) congratulates Colombian President Juan Manuel Santos (L) and the leader of the FARC, Rodrigo Londono -- better known by his nom de guerre, Timoleon 'Timochenko' Jimenez after the signing of the historic peace agreement between the Colombian government and the Revolutionary Armed Forces of Colombia (FARC), in Cartagena, Colombia, on September 26, 2016 The Colombian government and the leftist FARC rebel force signed a historic peace accord to end a half-century conflict that has killed hundreds of thousands of people. Santos and 'Timochenko' Jimenez, signed the deal at a ceremony in the Caribbean city of Cartagena, prompting loud cheers from the crowd which included numerous international dignitaries. / AFP / Luis ACOSTA (Photo credit should read LUIS ACOSTA/AFP/Getty Images)

Cuban President Raul Castro (C) congratulates Colombian President Juan Manuel Santos (L) and the leader of the FARC, Rodrigo Londono -- better known by his nom de guerre, Timoleon 'Timochenko' Jimenez after the signing of the historic peace agreement between the Colombian government and the Revolutionary Armed Forces of Colombia (FARC), in Cartagena, Colombia, on September 26, 2016 
The Colombian government and the leftist FARC rebel force signed a historic peace accord to end a half-century conflict that has killed hundreds of thousands of people. Santos and 'Timochenko' Jimenez, signed the deal at a ceremony in the Caribbean city of Cartagena, prompting loud cheers from the crowd which included numerous international dignitaries.
 / AFP / Luis ACOSTA        (Photo credit should read LUIS ACOSTA/AFP/Getty Images)