muduckace
I believe FANS was developed to eventually remedy that nasty little communication problem you have in Europe. It is all over the world, I have experienced it, worst influence is a native tongue in a native land then ATC switching back to english to handle us.
It not just communicating. Cultural differences are more important. Do you want to be a passenger in an aircraft controlled by Romanian ground crew?
Secondly (hence the comment on world peace) some places the neighboring countries are not even acknowledging each others existence. In Europe for example, the is no ATC coordination or handoff between Turkey and Cyprus.