President Obama is funny, he's thoughtful, he's challenging, he's fun to work with - and it's been an extraordinary privilege.

We also have begun to assess with the Ukrainians the scope of their larger security assistance requirements. We have had teams out making that assessment with the Ukrainians. And we have already provided various forms of equipment and support to Ukraine.

I may not be able to work for anybody else again. I may just have to work for myself.

I like to think that with me, what you see is what you get, and you can like or dislike it, it's up to you, but it's straight. That's something that I pride myself on.

The United States of America is the leading power in the world. Our friends and our adversaries respect us in large measure because they know that we are steady. We are fact-based. We are serious.

I read a ton of paper every day. I read the newspapers, I read my intelligence materials, I read all the briefing materials. I read the newspaper in hard copy.

I spend every day up at the United Nations where I have to interact with 192 other countries. I know how well the United States is viewed.