Over the past 65 years, eight people assumed the position of secretary general, last of whom current Ban Ki Moon whose tenure expires this year and a new replacement will be elected. Among the prominent achievements of the organization during more than six decades were the preservation of the world security and peace, peace-keeping in areas of tension, encouragement for democracy and development, promotion of human rights, protection of environment, prevention of proliferation of nuclear weapons, support the right of people for self-determination and independence. The united nations is embarked on intensive work in the fields of enhancement of international law, settlement of international disputes, ending racial segregation, provision of human relief materials for disaster-hit victims, mitigation of poverty and famine-related problems in developing countries, focusing on development in Africa, assisting women rights, provision of healthy drinking water, eradication of contagious diseases, designing programs for children vaccination and protection from early deaths, encouragement of investment in developing countries, provision of relief supplies in case of emergencies, protection of the ozone layer, combating forest eradication, combating environment pollution, combating drug spread and usage, improvement of commercial relations among nations, encouragement of economic reforms, support the intellectual property rights, protection of free flow of information, improvement of communication means and education programs in developing countries, eradication of illiteracy, preservation of antiquities and indigenous cultures, and encouragment of scientific and cultural programs. --More 20:32 LOCAL TIME 17:32 GMT www.spa.gov.sa/w