In the 19th century it was basically nationality and people trying to define their nationalism and create states which would reflect their nationalism. In the 20th century, ideology came to the fore, largely, but not exclusively, as a result of the Russian Revolution and we have fascism, communism and liberal democracy competing with each other. Well that's pretty much over.

Islam's borders are bloody and so are its innards. The fundamental problem for the West is not Islamic fundamentalism. It is Islam, a different civilisation whose people are convinced of the superiority of their culture and are obsessed with the inferiority of their power.

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

Obviously there are divisions within the West and divisions within Islam - there are different sects, different communities, different countries. So neither one is homogenous at all. But they do have things in common.

When you have increased migration of peoples and ethnic and religious minorities, you develop a set of rules and language the larger society can accept and the minority community can accept.

Well, I think the United States first of all has to recognize the world for what it is.

Thus, biologically speaking the American people are literally only half an immigrant people.