Whistleblowing website WikiLeaks is expected to reveal information today about 1.7 million U.S. diplomatic and intelligence documents from the 1970's.
WikiLeaks Founder Julian Assange told reporters Friday the data, which has not been leaked, includes cables, intelligence reports and congressional correspondence from the beginning of 1973 to the end of 1976.
They reportedly include communications sent by or to then U.S. Secretary of State Henry Kissinger.
WikiLeaks shocked the world in 2010 when it released a set of more than 250,000 leaked U.S. cables.
Assange has since taken refuge in Ecuador's embassy in London as he seeks to avoid extradition to Sweden over allegations of rape and sexual assault.