I would only go to Syria to destroy ISIS. I would not use U.S. troops to depose Assad. But I would support the rebels there. It's okay to support those people who share your view. But for the United States to be embroiled in a civil war in Syria against [Bashr] Assad I think is a big mistake.

I think if there's anything that's important today, it's credibility with the voter, because the voter is tired of being sold a bill of goods.

I've always been underestimated. It's happened throughout my entire career.

Let me just suggest to everybody, and I hear - last February [2015], I said we needed to have people on the ground in a coalition with Europe and our allies. This is not going to get done just by working with the Sunnis. And it is not going to get done if we just embed a few people.

Leaders have to lead.

I want people to hear what I think about these foundational American values of personal responsibility, resilience, family and faith, there are things that people can learn from somebody who leads a state like Ohio which is, frankly, a microcosm of the country.

There were 16 people in the race, including a number of governors, and there's only one left. And I think that at the end we have to make sure that we have somebody that can go to that town, change that system, grow employment, change the whole way in which it works and ship power money and influence back to the states. So I'm optimistic about it.