Baku.24 June. REPORT.AZ/ The US National Security Agency (NSA) spied on French Presidents Jacques Chirac, Nicolas Sarkozy and Francois Hollande in 2006-12, WikiLeaks says.
The whistleblower website cites "top secret intelligence reports and technical documents" from the NSA.
The US declined to comment, while Mr Hollande planned a defence council meeting on the issue for Wednesday, an aide told the AFP news agency.
The NSA was earlier accused of spying on German Chancellor Angela Merkel.
On Tuesday, Wikileaks said it began publishing the files under the heading "Espionnage Elysee" - a reference to the French presidential palace.
It said the secret files "derive from directly targeted NSA surveillance of the communications" of the three French presidents as well as French ministers and the ambassador to the US.
One of the files, dated 2012, is about Mr Hollande discussing Greece's possible exit from the eurozone, while another one - from 2011 - alleges that Mr Sarkozy was determined to resume peace talks between Israel and the Palestinians, possibly without US involvement.
It is unclear whether the material comes from data stolen by former NSA contractor Edward Snowden, the BBC's security correspondent Gordon Corera says.
The WikiLeaks files have now been published by France's Liberation daily and the Mediapart investigative website.