Everywhere that I go in the world, people desperately look to American leadership in all of their world's most difficult problems. You can look at any region of the world and the United States is still the country to which those regions look for leadership.

Search for role models you can look up to and people who take an interest in your career. But here's an important warning: you don't have to have mentors who look like you. Had I been waiting for a black, female Soviet specialist mentor, I would still be waiting. Most of my mentors have been old white men, because they were the ones who dominated my field.

What we will not wait for is that particular nexus of terrorism, weapons of mass destruction that is extremism, and the technology to come together in a way that is harmful to the United States.

We're all products of our environment, and I suspect that strength of will - the feeling, "I'm going to be able to do whatever you put in front of me" - is honed in an environment where not everything is easy. Ironically, growing up in that environment, you don't have a sense of aggrievement or entitlement. You just have a sense of overcoming.

We have to recognize that the reason that the global order that we've enjoyed and almost take for granted over the last several years exists is that after World War II, the United States and its allies tried to build an antidote to what they had seen between World War I and World War II. There, they'd seen protectionism, beggar-thy-neighbor trading policies, so they said, we'll build an open international economy. And they did that.

We can't afford to let the international community and the world lose faith in the diplomatic track.

When I said I had always hoped to marry in my race, I really do mean that. That doesn't mean I absolutely wouldn't marry outside of it, but there's a culture and traditions to maintain, and I have great pride in them, and I always thought it would be wonderful to share that with somebody of my race.