I see the future of China as growth. I think that historically China has often gone through periods of consolidation, and then periods of sort of weakening central authority. They undoubtedly face tremendous challenges.

I don't know what happens in the next years. But I cannot now design a policy in which we try to keep China from developing, because in some years, if they develop, they might be rich enough to challenge us, and adopt the principle that we will hold down any state that might in the future become strong. That would make us a world empire for which we wouldn't have the talents or the convictions.

At any rate, mutually assured destruction was never our policy.

The task of the leader is to get his people from where they are to where they have not been. The public does not fully understand the world into which it is going. Leaders must invoke an alchemy of great vision. Those leaders who do not are ultimately judged failures, even though they may be popular at the moment.

We have to be careful in negotiating with Iran that we don't create the impression among the Arab states and the Sunni states that we are working on a condominium between Iran and the United States, because that will panic them and drive them into making their own arrangement.

I have been observing China for more than 30 years and am impressed how logically and wisely it tackles its problems. Obviously the international system could be unbalanced by China's rising power - if we don't prepare ourselves for the new competitive situation, that is. But it is an economic challenge, not aggression on the level of Hitler.

America has made it very clear in several administrations that if there is an attack by China on Taiwan, the United States is very likely to resist.