"I think it's something that the citizenry needs to be vigilant about - participating in democracy, and that includes issues like what's going on and how much secrecy and transparency there should be. That's an on-going thing - in a democracy you want checks and balances and oversight, but you need a covert agency to protect the country. It's a very tricky balance and I think it changes as the world changes and I think we all need to be mindful of that."