six official languages of the UN, used in intergovernmental meetings and documents, are Arabic, Chinese, English, French, Russian, and Spanish. On the basis of the Convention on the Privileges and Immunities of the United Nations, the UN and its agencies are immune from the laws of the countries where they operate, safeguarding the UN's impartiality with regard to host and member countries. Below the six organs sit, in the words of the author Linda Fasulo, "an amazing collection of entities and organizations, some of which are actually older than the UN itself and operate with almost complete independence from it". These include specialized agencies, research and training institutions, programs and funds, and other UN entities. All organisations in the UN system obey the Noblemaire principle, which calls for salaries that will attract and retain citizens of countries where compensation is highest, and which ensures equal pay for work of equal value regardless of the employee's nationality. In practice, the International Civil Service Commission, which governs the conditions of UN personnel, takes reference to the highest-paying national civil service. Staff salaries are subject to an internal tax that is administered by the UN organizations. General Assembly The General Assembly is the main deliberative assembly of the UN. Composed of all UN member states, the assembly meets in regular yearly sessions at the General Assembly Hall, but emergency sessions can also be called. The assembly is led by a president, elected from among the member states on a rotating regional basis, and 21 vice-presidents. The first session convened 10 January 1946 in the Methodist Central Hall in London and included representatives of 51 nations. When the General Assembly decides on important questions such as those on peace and security, admission of new members and budgetary matters, a two-thirds majority of those present and voting is required. All other questions are decided by a majority vote. Each member country has one vote. Apart from the approval of budgetary matters, resolutions are not binding on the members. The Assembly may make recommendations on any matters within the scope of the UN, except matters of peace and security that are under consideration by the Security Council. Draft resolutions can be forwarded to the General Assembly by its six main committees: First Committee (Disarmament and International Security) Second Committee (Economic and Financial) Third Committee (Social, Humanitarian, and Cultural) Fourth Committee (Special Political and Decolonization) Fifth Committee