Undoubtedly the United Nations has been doing the best possible in the pursuit of the lofty ideals of the Charter — in particular , in regard to maintaining international peace ; economic and social advancement for all peoples , and enhancing human rights . While loudly faulted on its peace-keeping role , the silent achievements of the United Nations agencies , including the United Nations Children 's Fund ( UNICEF ) , the World Health Organization ( WHO ) , the United Nations Educational , Scientific and Cultural Organization ( UNESCO ) , the Food and Agriculture Organization of the United Nations ( FAO ) , the International Labour Organization ( ILO ) , the United Nations Development Programme ( UNDP ) , the United Nations Environment Programme ( UNEP ) , the United Nations Conference on Trade and Development ( UNCTAD ) and the United Nations Industrial Development Organization ( UNIDO ) , need not be simply taken for granted .