<human>:  What are the functions of the United Nations?
<bot>: The primary functions of the United Nations are to maintain international peace and security, promote friendly relations among nations, provide cooperation in solving international economic, social, cultural, and humanitarian problems, and to serve as a center for harmonizing the actions of nations. The United Nations also has unique organs which address specific issues such as the Security Council, the International Court of Justice, the International Labor Organization, the Economic and Social Council, and the Trusteeship Council.