Six decades of guerrilla war, dissident FARC factions, and ELN insurgency make Colombia's security crisis the Western Hemisphere's longest active armed conflict.

ELN talks frozen since the Catatumbo massacre; violence less deadly but more pervasive, monitors find, as the transition looms

Petro blames Iván Mordisco's EMC for a wave of bombings across Cauca and Valle del Cauca as the campaign turns violent