National Liberation Army (ELN) guerrilla members line up in their camp on the banks of the San Juan River, Chocó state, Colombia, on November 21, 2017. 

National Liberation Army (ELN) guerrilla members line up in their camp on the banks of the San Juan River, Chocó state, Colombia, on November 21, 2017. 

© 2017 Luis Robayo/AFP/Getty Images