The present article concerns a question of revising the UN Charter, which is essential both from the political and international law point of view. It is regulations of the Charter which are the legal guarantee of maintaining world peace and security. Changes in international community which took place in the decades of fourties and fifties in the scope of political differenciation of states, esp. the so-called great powers and in completion of the de-colonization resulted in increasing tendencies to revise several provisions of that document. Main subject of activities were: abolishing or limiting a principle of permanent membership of the Security Council, and the related right to veto, another definition of a role and competence...