This publication is published by the United Nations Secretariat as a guide to the proceedings of the Security Council from its first meeting in 1946 onwards. The Repertoire is designed to assist government officials, practitioners of international law, academics and all those interested in the work of the United Nations to follow the evolving practice of the Council and gain a better understanding of the framework within which it operates. The current supplement, thirteenth in the series of Supplements to the Repertoire, covers the year 1996 to 1999. It examines a period when the council addressed new challenges in an increasingly globalized world and explored different approaches to conflict prevention, peacekeeping and peacebuilding.