HILLARY Clinton believed her husband's affair with Monica Lewinsky was a "lapse" and dismissed the White House intern as a "narcissistic loony toon", according to papers released by one of her closest friends.
Political science professor Diane Blair, who advised on campaigns for Bill Clinton, wrote in a memo in 1998 that "HRC [Hillary Rodham Clinton] insists it was gross inappropriate behaviour, but it was consensual (was not a power relationship) and was not sex within any real meaning (standup, liedown, oral, etc.) of the term.
"It was a lapse, but she says to his credit he tried to break it off, tried to pull away, tried to manage someone who was clearly a 'narcissistic loony toon', but it was beyond control."
The note, which was made after a phone call with Mrs Clinton (66), was in a trove of documents given to the University of Arkansas after Mrs Blair's death in 2000. It was published online by the Washington Free Beacon.
The revelations came as rumours grew that Mrs Clinton would run for the White House in 2016.
Polls have shown she is the frontrunner for the Democratic nomination, but the reminder of the Lewinsky scandal could remind the US public of the Clintons' political baggage.
Despite that, it is believed that the former US Secretary of State's senior aides are already conducting informal interviews to assemble a campaign staff for a bid, although Mrs Clinton has insisted that she has not made her mind up about running again.
HRC, a new book on the former First Lady, has claimed that Mrs Clinton's staff are also considering how best to use her husband on the campaign trail. While he was a major asset to President Barack Obama's re-election in 2012, he repeatedly courted controversy during his wife's failed attempt to beat Mr Obama in 2008.
The book also tells of how Mrs Clinton wrote to David Petraeus when he resigned as head of the CIA following an affair to express her sympathy and joke, "I have a little experience" with infidelity".
Mr Petraeus, a former general once talked about as a potential presidential contender, said that she would be a "tremendous" president.
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