Service tax exemption for specified service providers when supplying services to United Nations or recognised international organisations. The Central Government exempts from the whole of the service tax under section 66 taxable services provided to the United Nations or an international organisation by the telegraph authority, insurers, advertising agencies, courier agencies, air travel agents, tour operators and security agencies. 'International organisation' means an organisation declared under section 3 of the United Nations (Privileges and Immunities) Act, 1947, to which the Schedule to that Act applies.