Brazil's president fended off criticism of his nation's shaky power grid as officials investigated a blackout that plunged as many as 60 million people into darkness, prompting concerns about the country's preparedness to host the 2016 Olympic Games.
Brazil's president fended off criticism of his nation's shaky power grid as officials investigated a blackout that plunged as many as 60 million people into darkness, prompting concerns about the country's preparedness to host the 2016 Olympic Games.
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