I happen to be a proponent of a single-payer universal health care plan.

I think my most important advice is to understand what are the foundations of a healthy democracy and how we have to engage in citizenship continuously, not just when something upsets us; not just when there's an election or when an issue pops up for a few weeks. It's hard work.

I've said repeatedly that where we see terrorist organizations like al-Qaeda or ISIL, they have perverted and distorted and tried to claim the mantle of Islam for an excuse, for basically barbarism and death. These are people who kill children, kill Muslims, take sex slaves - there's no religious rationale that would justify in any way any of the things that they do.

Isil poses a threat to the people of Iraq and Syria, and the broader Middle East - including American citizens, personnel and facilities. If left unchecked, these terrorists could pose a growing threat beyond that region, including to the United States.

I, more than anything, obviously the presidency is the people, and it's been interesting the emotions in the last few months. What you realize is that you may never have the team that is together in the same way, under the same pressures, and the attachments that you make to folks from your chief of staff down to.

Trayvon Martin could have been me 35 years ago.

This counter-terrorism campaign will be waged through a steady, relentless effort to take out Isil wherever they exist, using our air power and our support for partner forces on the ground. This strategy of taking out terrorists who threaten us, while supporting partners on the front lines, is one that we have successfully pursued in Yemen and Somalia for years.