A war of words has broken out between President Obama and the head of Sony Pictures over the company's decision to shelve a new comedy film after a cyber attack on its headquarters.
The White House says the North Koreans were responsible for breaking into Sony's mainframe, and then threatening to attack any American cinema that went ahead and showed "The Interview", a new comedy about an attempt to assassinate Kim Jong Un.
From Washington, Simon Marks reports.
IN: "President Obama….."
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