The chief negotiator of the FARC-EP leftist guerrilla delegation, commander Ivan Marquez, speaks during a press conference at the end of the 35th cycle of the peace talk between the Colombian government and the Revolutionary Armed Forces of Colombia, at Convention Palace in Havana, on April 20, 2015. Colombia's leftist FARC guerrillas said Monday they will maintain their unilateral ceasefire despite a recent clash with the army, except if their fighters come under siege. The two-year-old peace process suffered a setback last week when the rebels killed 11 soldiers in what the army called an unprovoked attack. AFP PHOTO / Yamil LAGE
{"Image ImageDescription": "The chief negotiator of the FARC-EP leftist guerrilla delegation, commander Ivan Marquez, speaks during a press conference at the end of the 35th cycle of the peace talk between the Colombian government and the Revolutionary Armed Forces of Colombia, at Convention Palace in Havana, on April 20, 2015. Colombia's leftist FARC guerrillas said Monday they will maintain their unilateral ceasefire despite a recent clash with the army, except if their fighters come under siege. The two-year-old peace process suffered a setback last week when the rebels killed 11 soldiers in what the army called an unprovoked attack.  AFP PHOTO / Yamil LAGE        (Photo credit should read YAMIL LAGE/AFP via Getty Images)"}