This "World without borders"...
Are we going with Sharia law?
Are we basing the legal framework on Oriental, Arabic, European, or what?
Religious freedoms in the tradition of Saudi Arabia, Israel, Europe, or the United States?
The world is 'smaller' now than it was even 25 years ago.
Yet, there are still cultural, moral, philosophical, legal, and religious differences that make it more realistic to have separate, distinct countries.
We are not at the point where 'we can all just get along.
We are, however, at the point where it is mostly viable to respectfully say 'you have your beliefs, and your corner of the world - I'll have my beliefs, and my corner of the world. And those things we have in common, we can trade between us based on those commonalities'