Humberto de la Calle Lombana is a Colombian lawyer and politician. He served as Vice President of Colombia from 1994 to 1997. De La Calle served in the cabinet as Interior Minister under two Presidents, Andrés Pastrana and César Gaviria. He also served as Ambassador to Spain and the United Kingdom. After 2003, De La Calle worked at his own Law firm which specialises in advising and representing international clients in Colombia. In October 2012 he was appointed by President Juan Manuel Santos as the chief negotiator in the peace process with the FARC.

The Revolutionary Armed Forces of Colombia – People's Army is a Marxist–Leninist guerrilla group involved in the continuing Colombian conflict starting in 1964. The FARC-EP was officially founded in 1966 from peasant self-defense groups formed from 1948 during the "Violencia" as a peasant force promoting a political line of agrarianism and anti-imperialism. They are known to employ a variety of military tactics, in addition to more unconventional methods, including terrorism.