First of all, they should learn neighboring countries in terms of culture and history to achieve a better understanding in each other. Learning history tough us for patriotism on misunderstandings, if you understand that all cultures are valuable to people in each society. The view on the neighboring countries will lead to greater understanding. Next is language learning opportunities to enhance more proficiency English language to be able to communicate with foreigners.
Presently, communicating on the internet and coordinating of business is what everyone should know also.