Colombia's ELN says peace talks will begin once rebels freed

By Luis Jaime Acosta BOGOTA (Reuters) - Peace talks between the Colombian government and Marxist insurgent group the National Liberation Army (ELN) will begin only after a simultaneous release of a politician held by the guerrillas and two imprisoned rebels, an ELN leader said. Colombia's second-largest leftist rebel group and the government of President Juan Manuel Santos have agreed to begin peace negotiations in Ecuador, part of Santos' efforts to end a 52-year conflict that has killed more t