Countries in the world which have separate entities but do not have independence and sovereignty and are run under the supervision of another state are called trustees . The UN Board of Trustees is responsible for overseeing these areas The Council of Trustees consists of the member states of the United Nations, the governing body of the trustees , and other permanent and elected members of the Security Council . Through the Council of Trustees, the United Nations assumes responsibility for overseeing the underdeveloped regions of the world