Hardly the "do-nothings" you think they are.
http://www.clw.org/pub/clw/un/whyunmat.htmlEstablishing Peace & Promoting Democracy
Ending Conflicts. The U.N. has negotiated 172 peaceful settlements, helping bring about an end to the Iran-Iraq war, the civil war in El Salvador, and withdrawal of Soviet troops from Afghanistan.
Peacekeeping. In El Salvador, Cambodia, Macedonia, Mozambique, Namibia, Cyprus and Haiti, to name a few, U.N. peace operations have helped uphold ceasefires, conduct free and fair elections, monitor troops withdrawals, deter violence, create free countries, and aid political stability.
Preventing Nuclear Proliferation. The International Atomic Energy Agency has helped minimize the spread of nuclear weapons by inspecting and monitoring nuclear reactors and facilities in 90 countries. The U.N. has also advanced arms control through international agreements such as the Chemical Weapons Convention and the Nuclear Non-Proliferation Treaty.
Eradicating Disease & Famine
Ending Smallpox & Polio. A 13-year effort by World Health Organization (WHO) succeeded in eradicating smallpox in 1980. WHO also helped wipe out polio from the Western Hemisphere.
Universal Immunizations. In 1974, only five percent of children in developing countries were immunized against polio, tetanus, measles, whooping cough, diphtheria and tuberculosis. By 1995, as a result of the efforts of United Nations Children's Fund (UNICEF) and the WHO, there was an 80% immunization rate, saving the lives of over 3,000,000 children each year.
Alleviating Chronic Hunger and Rural Poverty. The U.N. has provided famine relief to millions of people. The International Fund for Agricultural Development had developed a system of providing economic credit for poor and marginalized groups, benefiting over 230 million people in nearly 100 developing countries and building longer-term hunger relief.
Protecting People & Resources
Helping Refugees. In 1996, 27 million refugees, mostly women and children, receive food, shelter, medical aid, education and repatriation assistance from the U.N. High Commissioner for Refugees.
Environment. Through international treaties, the U.N. leads efforts to protect the ozone layer and curb global warming. Forestry action plans help limit deforestation and promote sustainable forestry practices for 90 countries. The U.N. has helped provide safe drinking water for 1.3 billion people in rural areas, and has on-going efforts to help prevent over-fishing and clean up pollution.
Improving Female Literacy. U.N. programs to help promote education and advancement for women helped raise their literacy rate in developing countries from 36% in 1970 to 56% in 1990.