Americans are hungry for change both at home and in our relations with the rest of the world.

The U.S. cannot go it alone simply when it is convenient.

We should learn to tolerate nuclear weapons of North Korea just like we did the Soviet Union.

What I learned is that policymakers have to force consideration of actions that may not have occurred to them at the time.

President Obama is an extraordinary person to work with and for.

There is not an inherent contradiction between a Ukraine that has longstanding historic and cultural ties to Russia, and a modern Ukraine that wants to integrate more closely with Europe.

I am blunt sometimes; I am diplomatic sometimes; I am all things in between. Abrasive, you know, I guess it's in the eye of the beholder.