In Maidan Square right now, you see thousands of Ukrainians protesting the Russian occupation of Crimea. So this is a Russian protest by Ukrainians who want their sovereignty. They want their freedom and they're protesting what Russia did in Crimea.

If we were to impose greater sanctions on economic sectors, I think we could have a significant impact on Putin.

Governor Romney is suffering from political amnesia.

[Putin] is a bully. And bullies only understand when we punch them in the nose, but we need to do that economically.

I do believe that [climate change] is real.

The best way to marginalize the Muslim Brotherhood [in Egypt] is in the ballot box, not through arrests and killing people.

We need to deter Putin from further actions because this is a very real threat.