The charges [government] brought against me, for example, explicitly denied my ability to make a public-interest defense.

I believe that when [senator Ron] Wyden and [senator Mark] Udall asked about the scale of this, they [the NSA] said it did not have the tools to provide an answer. We do have the tools and I have maps showing where people have been scrutinised most. We collect more digital communications from America than we do from the Russians.

I must say I'm surprised by how skeptical of the [Barack] Obama administration The Nation has been.

We hack everyone everywhere. We like to make a distinction between us and the others. But we are in almost every country in the world. We are not at war with these countries.

I don't think it is the most important thing. I think it is the fact that the director of national intelligence gave a false statement to Congress under oath, which is a felony. If we allow our officials to knowingly break the law publicly and face no consequences, we're instituting a culture of immunity, and this is what I think historically will actually be considered the biggest disappointment of the [Barack] Obama administration.

The majority of terrorist attacks that have been disrupted in the United States have been disrupted due to things like the Time Square bomber, who was caught by a hotdog vendor, not a mass surveillance program, not a cyber-espionage campaign.

It's interesting that you mention [Andrei] Sakharov's creative axis - he had produced something for the government that he then realized was something other than he intended. That's something [NSA whistleblower] Bill Binney and I share.