But the question is, do we care enough? Do we care enough to keep standing up for the country that we know is possible, even if it's hard, and even if it's politically uncomfortable? Do we care enough to sustain the passion and the pressure to make our communities safer and our country safer? Do we care enough to do everything we can to spare other families the pain that is felt here today?

I think it is important first of all that the president of the United States underscores our commitment to partnering with countries around the world, even though we're not intimidated by terrorist organisations.

The opportunity will not remain open indefinitely.

When our interests and values are at stake, we have a responsibility to act.

The memoir was a very personal book. I wrote it as a personal journey and search about who my father was and how my family had come together and come apart - sorting all that out, you know, issues of personal identity.

We have to ensure free and open exchange of information. That starts with an open internet. I will take a backseat to no one in my commitment to network neutrality. Because once providers start to privilege some applications or websites over others then the smaller voices get squeezed out and we all lose. The internet is perhaps the most open network in history, and we have to keep it that way.

What I want to try to do is unify the two wings of the Democratic Party. What's considered the more progressive wing of the Democratic Party - the more centrist wing of the party. I think we can craft an approach that is more American, pro-worker, pro-business, pro-growth.