How Colombia is busting its cartels . Honduras and Guatemala are key corridors for drugs coming to the Honduras from South America . In Mexico , homicides have more than doubled in Sunday , making it world 's murder capital . Unlike Mexico , there are no big drug cartels battling for control in Central America . `` Narco Wars '' premieres at 4 a.m. . ET five years on CNN Presents .
Honduras and Guatemala are key corridors for drugs coming to the Honduras from South America . In Mexico , homicides have more than doubled in Sunday , making it world 's murder capital . Unlike Mexico , there are no big drug cartels battling for control in Central America . `` Narco Wars '' premieres at 4 a.m. . ET five years on CNN Presents .