I have tried my entire life to do what I can to support children and families.

It is our job to figure out what happened and do everything we can to prevent it from ever happening again.

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.

We have to save as many lives as we possibly can.

The worst thing that can happen in a democracy - as well as in an individual's life - is to become cynical about the future and lose hope.

I'm in charge of the State Department's 60,000-plus people all over the world, 275 posts.

I think the stress on income inequality is something that every American should take seriously.