It's clear the CIA was trying to play 'keep away' with documents relevant to an investigation by their overseers in Congress, and that's a serious constitutional concern. But it's equally if not more concerning that we're seeing another 'Merkel Effect,' where an elected official does not care at all that the rights of millions of ordinary citizens are violated by our spies, but suddenly it's a scandal when a politician finds out the same thing happens to them.

Properly implemented strong crypto systems are one of the few things that you can rely on.

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.

You simply have to eventually fall under suspicion from somebody even by a wrong call. And then they can use this system to go back in time and scrutinize every decision you've ever made, every friend you've ever discussed something with. And attack you on that basis to sort to derive suspicion from an innocent life and paint anyone in the context of a wrongdoer.

They are intent on making every conversation and every form of behaviour in the world known to them.

Presidents should not be exempted from the same standards of reason and evidence and justification that any other citizen or civil movement should be held to.

We don't like to use the phrase "state security" in the United States because it reminds us of all the bad regimes. But it's a key concept, because when these officials are out on TV, they're not talking about what's good for you. They're not talking about what's good for business. They're not talking about what's good for society. They're talking about the protection and perpetuation of a national state system.