US ambassador to Brazil summoned over new spying allegations

The American ambassador to Brazil was summoned by authorities today over new allegations that the US National Security Agency spied on President Dilma Rousseff, an official said.
Rio de Janeiro-based journalist Glenn Greenwald, a columnist for the Guardian newspaper who obtained secret files from NSA leaker Edward Snowden, told Brazil's Globo television yesterday of the alleged security breaches, which also involved Mexican President Enrique Pena Nieto.