I have said the invasion of Iraq was a mistake. But I think if we're ever going to really tackle the problems posed by jihadi extreme terrorism, we need to understand it and realize that it has antecedents to what happened in Iraq and we have to continue to be vigilant about it.

I believe that I have created a lot of cognitive dissonance in the minds of people who are comfortable with stereotypes.

In almost every profession - whether it's law or journalism, finance or medicine or academia or running a small business - people rely on confidential communications to do their jobs. We count on the space of trust that confidentiality provides. When someone breaches that trust, we are all worse off for it.

It is time to pick a side.Either we stand with the gun lobby or we join the president and stand up to them.

I want to be the best president I can be for every American.

The candidates we have in this campaign are... the most accomplished, in terms of public service, that we've had since 1960. One of them will be successful.

I think it's important that we do it [defeat ISIS] in concert with other nations in Europe, the Middle East, elsewhere if necessary. And that means you've got to work with people. You don't insult them. You don't insult their religion. And it means we have to see our entire country, all of the people in it, as part of our first line of defense.