Snowden offers to help Brazil investigate NSA in exchange for asylum
Germany turned him down. But what about Brazil?
How Brazil's spying efforts differ from the NSA
The NSA has argued that every nation spies. Do recent revalations that Brazil spied on U.S. diplomats prove them right?
Is the NSA engaging in economic espionage?
The motives are still unclear over the National Security Agency's controversial surveillance of Brazilian oil giant Petrobras.