BOGOTA, Colombia — One of the most prominent rebels from Colombia’s long conflict has joined his country’s reconciliation effort even though he is locked up in a maximum-security prison in Colorado with little immediate prospect of being able to return home, where thousands of other former combatants will earn pardons ...

Unable to receive letters, packages, and emails, Simon Trinidad, citizen of Colombia, lives in a tiny, constantly illuminated, underground cell in a high-security prison in Colorado.

Fifty years of bloody conflict in Colombia — thousands of deaths from firefights, sniper attacks, bombings, assassinations and mass executions — and it all comes down to this: a group of government negotiators and rebel leaders sitting around a big table, talking about land reform and crop subsidies and what ...