Well, I don't know whether it caused anguish in China, but it was not a wise way to proceed. But one has to remember that it was the first experience. And in a Republican administration, there is a conservative wing that looks at China as the last embodiment of communism, which therefore tends towards a more bellicose rhetoric anyway than I would. It's not the dominant element, but every once in a while they get a crack at public statement.

In the middle '50s, I had written that the point would come, inevitably, at which the relationship between the cause of conflict and political objectives would be lost.

The challenge is whether China as a rising country, the United States as the superpower, can develop a cooperative relationship in this period before nationalism becomes so dominant in China as a substitute for communism, and a kind of self-righteous isolationism in this country that substitutes China for the Soviet Union.

The convictions that leaders have formed before reaching high office are the intellectual capital they will consume as long as they continue in office.

In the short term, it would not have made it possible to resume relations, because in the Chinese mind, the humiliation of China started with the annexation of Taiwan by Japan. If the United States had suddenly declared Taiwan as a separate state - for which we would have had no support among other nations - the consequences would have been giving up our relationship with China and committing ourselves to a long-term conflict with China.

From a geo-strategic point of view, I consider Iran a bigger problem than the Islamic State. ISIS is a group of adventurers with a very aggressive ideology. But they have to conquer more and more territory before they can became a geo-strategic, permanent reality. I think a conflict with ISIS - important as it is - is more manageable than a confrontation with Iran.

I think an appeal to American idealism and willingness to sacrifice would be an important contribution, because what is happening now in many countries, not yet in the United States, but in many European countries, it's the inability of government to ask for sacrifices of its people.