I think the Turks' willingness to take seriously action on the borders to stop the flow of foreign fighters joining ISIL is significant.

We know the battle ahead will be long. But always remember that, no matter what obstacles stand in our way, nothing can stand in the way of the power of millions of voices calling for change.

Reflecting on his years in prison, Nelson Mandela wrote that there were dark moments that tested his faith in humanity, but he refused to give up.

I think that I'll always remember the bust of Dr. [Martin Luther] King. I thought having an American here who represented rhat civic spirit that got me into this [president] office was useful.

Third, we will continue to draw on our substantial counterterrorism capabilities to prevent ISIL attacks. Working with our partners, we will redouble our efforts to cut off its funding; improve our intelligence; strengthen our defenses; counter its warped ideology; and stem the flow of foreign fighters into - and out of - the Middle East. And in two weeks, I will chair a meeting of the UN Security Council to further mobilize the international community around this effort.

Just from a political perspective, do you think the president of the United States going into re-election wants gas prices to go up higher? Look, here's the bottom line with respect to gas prices: I want gas prices lower because they hurt families.

Just listen to what Mr. [Donald] Trump has to say and make your own judgment with respect to how confident you feel about his ability to manage things like our nuclear triad.