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The former president of Brazil is facing arrest and imprisonment over corruption charges. NPR's Philip Reeves reports.

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Several countries are helping with the search for a missing Argentine submarine. But concerns about the fate of the crew are growing. Officials worry the vessel's oxygen supply is running short. NPR's Philip Reeves has more.

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As Venezuela's president, Nicolas Maduro, becomes increasingly autocratic, he's gathering enemies. One of the most influential of those is a lawyer from within his own government. She is now in Brazil and speaking out, as NPR's Philip Reeves reports.

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