Countries will cooperate with each other, and are more likely to cooperate with each other when they share a common culture, as is most dramatically illustrated in the European Union. But other groupings of countries are emerging in East Asia and in South America. Basically, as I said, these politics will be oriented around, in large part, cultural similarities and cultural antagonism.

Nationalism is a central ideology for people who are trying to establish their own states in which they can play a dominant role.

In 1920, the West ruled huge amounts of the world.

Some Westerners […] have argued that the West does not have problems with Islam but only with violent Islamist extremists. Fourteen hundred years of history demonstrate otherwise.

The major difference for us in America with respect to Hispanic immigration is that it is so large and that it is coming from neighboring countries rather than those countries off the Atlantic or Pacific. That creates different issues and different problems for us as compared to the past. It is still very different, however, from the situation in Europe where we see people with a very different non-European religion coming from neighboring countries.

The core of the American set of beliefs has remained pretty constant.

The basis of association and antagonism among countries has changed over time.