Guardian journalist Glenn Greenwald has told ITV News not a "single comma" from his whistleblowing reports about state security has helped terrorism.
In his first British TV interview, he said "nothing has been revealed" about alleged state spying that "terrorists don't already know".
The independent reviewer of terrorism legislation said he will examine the detention of David Miranda at Heathrow Airport.
Nick Clegg has backed David Cameron's decision to send a top civil servant to The Guardian to urge them to destroy classified data.
The Guardian journalist whose partner was held at Heathrow Airport hits out at the UK as he gives ITV News his first British TV interview.