Robert Redford on the state of journalism, politics and film

The movie star Robert Redford, who played Watergate reporter Bob Woodward in All The President's Men, says newspaper standards are in "steep decline".

"That's why documentaries have become so important," he told the BBC. "They are probably a better form of truth."

Redford is bringing several documentaries to the inaugural Sundance London film festival in April.

Will Gompertz met him for an exclusive interview in New York.