BBC News - 10/17/13
President Dilma Rousseff has called off a state visit to the United States this month over allegations of American espionage against Petrobras
Oil production in Brazil has been disrupted by a strike against a planned auction for rights to explore a huge offshore oilfield near Rio de Janeiro.
Union leaders say 90% of employees of the state oil company, Petrobras, joined the strike on Thursday.
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