The third edition of the MEA Negotiators Handbook is a joint publication by the Center for Climate Change, Energy and Environmental Law (CCEEL) at the UEF Law School and UNEP. Multilateral Environmental Agreement (MEA) negotiations are among the most dynamic negotiations in international law. The process, structure and substance of negotiations has been evolving over time requiring negotiators to be well guided on procedural as well as substantive aspects of negotiations. This is the reason for revising and updating this negotiators’ handbook from time to time, this being the third edition, so that negotiators can be well guided on the process and the structure of negotiations.