I think in theory, the United States finds it much easier to deal with situations where there is a leading country. You can go to the leaders of that country and say, for example, to India, "There are all these problems in Bangladesh, we really have to do something about it, what do you suggest we can do to work out a common policy?" But when you don't have the equivalent of India, you have to go capital to capital trying to put together a coalition, which is extraordinarily difficult, especially in the Arab world, because of the historic rivalries and branches of Islam.

Obviously Pakistan and the U.S. are very different countries, but we have common geopolitical interests in preventing communist take over in Afghanistan and hence, now that Pakistan has a government that we can cooperate with, even though it is a military government, we are working together with them in order to promote our common interests. But obviously we also differ with Pakistan on a number of issues.

The question really is what will be the central focus of global politics in the coming decades and my argument is that cultural identities and cultural antagonisms and affiliations will play not the only role but a major role.

Two significant developments in the past several decades have been the collapse of communism as an ideology and the general acceptance, in rhetoric, if not practice, of liberal democracy.

What are the prospects for an Arab state serving a leading role comparable to the role that other states place in other regions? There is no obvious candidate. Saudi Arabia has the money but a relatively small population. Iraq was a great potential leader, as a sizable country with great oil resources and a highly educated population, but it went off in the wrong direction.

Certainly here in the U.S., we've had fundamentalist movements that have taken very critical and hostile attitudes toward immigration and the assimilation of immigrants into our society and culture. So these tendencies are fairly universal. The problem is what if they get out of hand and become the dominant factor in a society, which can only lead to the oppression of minorities or even to war with neighboring societies with differing cultures. That's why it seems to me it's important to try to keep these tendencies toward extremism under control.

People have multiple identities.