With all the trade wars, and the resurgence of some nationalist movements, going, it seems that many don't seem to acknowledge how integrated the world has become. It has become almost impossible to find products that don't have some degree of components made in several countries, or being sourced to third party manufactures on other country.
Not only that, the advent of the Internet means that most people, and businesses, can make contact almost anyone else without much regard where they are geographically speaking. Not only that, we can access information and content form any other region with relative easy in both legal, and illegal, ways. When you combine this with smartphones, it means that those connections are much easier and stronger.
Borders are becoming only relevant to mark a geographic place, but irrelevant for people and information movements. With time, we are building a global village and more of a global identity, though I don't see countries totally disappear. I seeing their meaning changing to something else.
Global integration is a matter of time, what we should be doing is making it so it benefits as many people as possible. We should be building the framework that makes it happen, not trying to stop it.
As it goes, we should be bringing people together not tearing them apart. It the way to move forward.