"Personal data of citizens was intercepted indiscriminately. Corporate information – often of high economic and even strategic value – was at the centre of espionage activity.

"Also, Brazilian diplomatic missions, among them the permanent mission to the UN and the office of the president of the republic itself, had their communications intercepted," Rousseff said, in a global rallying cry against what she portrayed as the overweening power of the US security apparatus.

"Tampering in such a manner in the affairs of other countries is a breach of international law and is an affront of the principles that must guide the relations among them, especially among friendly nations. A sovereign nation can never establish itself to the detriment of another sovereign nation. The right to safety of citizens of one country can never be guaranteed by violating fundamental human rights of citizens of another country."

"As many other Latin Americans, I fought against authoritarianism and censorship and I cannot but defend, in an uncompromising fashion, the right to privacy of individuals and the sovereignty of my country," the Brazilian president said. She was imprisoned and tortured for her role in a guerilla movement opposed to Brazil's military dictatorship in the 1970s.

"In the absence of the right to privacy, there can be no true freedom of expression and opinion, and therefore no effective democracy. In the absence of the respect for sovereignty, there is no basis for the relationship among nations."