For America to get more entangled militarily in Syria is a serious step, and we have to do so making absolutely certain that we know who we are helping; that we're not putting arms in the hands of folks who eventually could turn them against us or allies in the region.

With respect to Russia, my principal approach to Russia has been constant since I first came into office. Russia is an important country. It is a military superpower. It has influence in the region and it has influence around the world.

We've endured too many tragedies. And each time I learn the news I react not as a President, but as anybody else would - as a parent.

I have got to figure out a system because I have bad filing, sorting, and organizing habits.

My hope is that's something [Donald Trump] is thinking about, because not only is the president of the United States somebody that the entire country looks to for direction but sets the agenda internationally in a lot of ways.

I think that what is always true when you run against an incumbent president is, is that you end up talking more about that president's record than your vision for the future, and I think that the Democrats do have to present a proactive agenda and vision for the country and not simply run against something if they're going to be successful.

If people, whether they are conservative or liberal, left or right, are unwilling to compromise and engage in the democratic process, and are taking absolutist views, and demonizing opponents, then democracy will break down.