There may be, and sometimes is, a clash of interests among States, each striving for its own development. When differences of this sort arise, they must be settled in a truly human way, not by armed force nor by deceit or trickery. There must be a mutual assessment of the arguments and feelings on both sides, a mature and objective investigation of the situation, and an equitable reconciliation of opposing views.
A special instance of this clash of interests is furnished by that political trend (which since the nineteenth century has become widespread throughout the world and has gained in strength) as a result of which men of similar ethnic background are anxious for political autonomy and unification into a single nation. For many reasons this cannot always be effected, and consequently minority peoples are often obliged to live within the territories of a nation of a different ethnic origin. This situation gives rise to serious problems.
It is quite clear that any attempt to check the vitality and growth of these ethnic minorities is a flagrant violation of justice; the more so if such perverse efforts are aimed at their very extinction .