One of the principal objectives of the UN is to solve economic, social, cultural and humanitarian problems through international cooperation. A number of specialized agencies have been set up to achieve these goals, agencies which may or may not have been originally created by the United Nations, but they are incorporated into the United Nations System by the United Nations Economic and Social Council acting under Articles 57 and 63 of the United Nations Charter. At present, the UN has in total 15[2][3][note 1] specialized agencies that carry out various functions on behalf of the UN.