This publication has been issued in implementation of the United Nations Disarmament Information programme as a handy, convenient and attractive reference tool containing the report of the Secretary-General on verification in all its aspects, including the role of the UN in the field of verification. It also contains additional material related to the publication of the report. The publication continues the Disarmament Study Series and should serve as a valuable addition to the reference section of public and university libraries, permanent missions, research institutes and specialised non-governmental organisations.