France "will not tolerate" acts that threaten its security, President Francois Hollande said, after Wikileaks revealed that the US spied on him and his two predecessors.
A statement from the French presidency (in French) said the US must respect a promise not to spy on French leaders.
Wikileaks says US spies eavesdropped on Mr Hollande, Nicolas Sarkozy and Jacques Chirac between 2006-12.
The US would not confirm the veracity of the reports.
