The big issue is this incremental whittling away of our constitutional rights, our most important constitutional rights, including freedom of speech. This is something that we really have to put our foot down on, and we have to fight it at every step of the way.

If the CIA is going to disrupt future terrorist attacks, it needs to recruit spies to infiltrate those groups in order to disrupt the terrorist attacks. Not to rely on what you and I are putting in chat messages on Google or Apple.

It's not up to Google, it's not up to Apple to turn over our personal communications in order to save the country. It's up to the CIA and it's up to the FBI to recruit foreign - I mean to recruit human sources, rather, to penetrate these groups.

I've never heard a White House staff say that the president was too stupid or too ill-informed to have broken the law. And that's really what it comes down to. The truth is, he leaked highly classified information that he shouldn't have leaked. It's one thing to say, "Hey, I'm the president. Nobody can punish me for that." It's another thing entirely to just deny that he did it. We know that he did it. And he really ought to own up to it.

The big issue is this incremental whittling away of our constitutional rights, our most important constitutional rights, including freedom of speech. This is something that we really have to put our foot down on, and we have to fight it at every step of the way.

The CIA has transformed from an organization created to recruit spies to steal secrets, into a paramilitary organization, a paramilitary force. It's not supposed to be a paramilitary force. It's not good at it. It needs to return to its roots.

Even if torture works, it cannot be tolerated -- not in one case or a thousand or a million. If their efficacy becomes the measure of abhorrent acts, all sorts of unspeakable crimes somehow become acceptable. I may have found myself on the wrong side of government on torture. But I'm on the right side of history. There are things we should not do, even in the name of national security. One of them, I now firmly believe, is torture.