I was very happy in my job at the United Nations.

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

Well, I think by any expectation South Africa has come a tremendously long way. We've seen a society that many people thought couldn't withstand a peaceful transition to democracy without a great deal of violence, in fact, make that transition and do it in relative peace and security.

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 have a range, and I'd much rather do things the nice way than the hard way, but sometimes you have to use all the tools at your disposal.

Iran's economy is now shrinking by 1 percent a year. Its oil production is down 40 percent.

Americans understand that our security is enhanced when the United States is trusted and respected in the world.