Actively promoting mother-tongue education for immigrants that are part of a large group will create a segregated society in which people are not able to communicate and relate one to another. Integration will be harder to achieve in these conditions - the state may gain some goodwill from the concession but it is unlikely to last. The difficulty in communicating with the state, even for everyday tasks such a doctor’s appointment, will surely sour relations more. Different languages create a segregated society in which foreigners are not able to integrate.  Secondly, diplomacy and trade matters have no connection with the way immigrants are treated on a minor issue like this. Those immigrants who want to trade and promote links between their old home and their new one will continue to do so regardless.