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Obama defends US surveillance of telephone records

7 June 2013 Last updated at 18:28 BST

President Barack Obama has sought to reassure the American people following revelations that US intelligence agencies have conducted large-scale surveillance of US telephone records and foreign internet use.

Mr Obama said nobody was listening to the phone calls of Americans but measures were needed to keep Americans safe, while protecting privacy.

He said the surveillance programmes, whose details have been revealed in the media, were in place to anticipate and prevent terrorist activity, and had been approved by Congress.