- Collective security — International peace and security
This chapter examines the UN’s peacekeeping operations. A peacekeeping operation may be defined as a UN-authorized, UN-led force made up of civilian and/or military personnel donated by states or seconded by the Secretariat, physically present in a country or countries with a view to facilitating the maintenance of peace, generally after a conflict has ceased. Many consider that for an operation to be peacekeeping, it must take place with the consent of the host state. However, this may or may not be a legal requirement, depending on the constitutional basis of the operation. The chapter discusses the fundamental characteristics of peacekeeping; categories of peacekeeping; legal basis for peacekeeping; peacekeeping and consent; peacekeeping and the use of force; peacekeeping and impartiality; functions of peacekeeping operations; UN Transitional Administrations; and the future of UN peacekeeping.
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