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Colombian rebel leader calls on US to free jailed comrade

One of Colombia's most-grizzled and important rebel fighters is calling on President Barack Obama to do more to support peace and to free a guerrilla leader jailed for more than a decade in the United States.

Speaking amid the trees of his jungle hideout in southern Colombia, the guerrilla commander known by the alias Martin Corena said such a move would be the best way for the Obama administration to back with actions its public support for an approaching deal to end decades of bloody fighting.

"There have been a lot of statements and verbal demonstrations of support, but in practice, up to now, the support of the United States hasn't been viable and hasn't become...