The US National Security Agency (NSA) spied on French Presidents Jacques Chirac, Nicolas Sarkozy and Francois Hollande in 2006-12, Wikileaks says [citing] top secret intelligence reports and technical documents" from the NSA. A file dated 2010 suggests that French officials were aware that the US was spying upon them and intended to complain about it. According to the summary of an intercepted exchange, the French envoy to Washington ... discussed Mr Sarkozy's plan to express his "frustration" over US unwillingness to sign a "bilateral intelligence co-operation agreement". "The main sticking point is the US desire to continue spying on France," the intercept says. [One analyst commented] "Of course they know that spying goes on – even between friends. But the cardinal rule is not to get found out. When you do, you must expect the full force of diplomatic outrage." In response to the alleged leaks, National Security Council spokesman Ned Price said: "As a general matter, we do not conduct any foreign intelligence surveillance activities unless there is a specific and validated national security purpose. This applies to ordinary citizens and world leaders alike." In 2013 Brazilian media reported that NSA documents showed the agency had also spied on Brazilian President Dilma Rousseff and President Enrique Pena Nieto of Mexico. [Also] in 2013 the NSA was accused of spying on German Chancellor Angela Merkel. German media later reported that Germany's national intelligence agency had spied on ... the EU's headquarters on behalf of the US.