The Iraq war that I signed up for was launched on false premises. The American people were misled. Now, whether that was due to bad faith or simply mistakes in intelligence, I can't say for sure. But I can say it shows the problem of putting too much faith in intelligence systems without debating them in public.

What we're really debating is not security versus liberty, it's security versus surveillance. When we talk about electronic interception, the way that surveillance works is it preys on the weakness of protections that are being applied to all of our communications. The manner in which they're protected.

One of the kind of unexpectedly liberating things of becoming this global fugitive is the fact that you don't worry so much about tomorrow. You think more about today. And unexpectedly, I like that very much.

Congress hasn't declared war on the countries - the majority of them are our allies - but without asking for public permission, NSA is running network operations against them that affect millions of innocent people. And for what? So we can have secret access to a computer in a country we're not even fighting?

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.

The New York Times and The Guardian came out and said, "Hey, clemency for Snowden." But for me, the key - and I've said this from the beginning: it's not about me. I don't care if I get clemency. I don't care what happens to me.

We have to decide why terrorism is a new threat. There has always been terrorism.