We are making tremendous progress that ISIS really does present to the homeland and to other homelands of allies around the world.

I think the relationship between the USA and Russia is too important. And it's too important to not find a way to move forward.

People who speak up for freedom in regimes that are repressive are often at threat.

We're hopeful that Russia will choose to play a constructive role in supporting ceasefires through their own Astana talks, but also, ultimately, through Geneva. And if we can achieve ceasefires in zones of stabilization in Syria, then I believe we will have the conditions to begin a useful political process.

Just remember that a pat on the back is only 18 inches from a kick in the behind.

The increase in the greenhouse gas concentrations in the atmosphere are having an effect. Our ability to predict that effect is very limited.

Obviously, the United States' own founding principles are self-determination. And I think what the United States and our allies want to do is to enable the Syrian people to make that determination. You know, we've seen what violent regime change looks like in Libya and - and the kind of chaos that can be unleashed.