We have seen many times where those from so called 'problematic' countries are denied access to some other country. This also makes a mockery of the global world in which we supposedly live.
Our financial systems, banks etc, are global companies and look at what has happened to them. Part, if not all, of the worlds financial meltdown can be attributed to how the financial sector played in the global world. There are other examples of companies that played in the global world who are now suffering because of it.
So, we live, as our own Prime Minister is want to say, in a global world and yet that global world for many people is a closed door.
A few years ago one could move between the various borders of various countries just as easily as one could walk the streets of ones own city or town. What exactly happened to close the global world door no-one really knows. We can surmise however that the U.S.A. being finally dragged screaming into the terrorist malee (we here in the U.K. had to suffer the U.S.A. funded IRA attrocities a long time before any real terrorist activity landed at the door of the U.S.A. but I digress..) was the catalist for the global world to be unattainable by some. And of course where the U.S.A. goes many other countries follow which closes more and more doors of the global world for some.
The world of today is only global because of the rise of the Internet. For all other aspects the world is no more global now than it ever was and for some never will be.