Part of what makes me most optimistic is if you look at the attitudes of young people. Across the board, young people are much more comfortable with respecting differences. They are much more comfortable with diversity.

The other reason might be that you want to talk to voters when you've got seven primaries in seven days. Understand what's happened in this race - where we campaign actively in a state, and voters have the chance to see me directly, they check under the hood, and they kick the tires, when we don't have as much time.

We have a stake in one another...what binds us together is greater than what drives us apart.

I think it is possible for the world to see a Palestinian state - I'm not going to put a time frame on it - that is contiguous, that allows freedom of movement for its people, that allows for trade with other countries, that allows the creation of businesses and commerce so that people have a better life.

And terrorists who seek to harm our citizens will feel the long arm of American justice.

Things change pretty rapidly. But they don't change inevitably. They change because you work for it.

If you look at the current Mosul campaign against ISIL, for example the few thousand troops that we have there to support that effort allows the Iraqi military to move forward in an effective way.