This Handbook on Integrated Assessment of Trade-related Measures: The Agriculture Sector (hereafter the Handbook) contributes to UNEP's work in this area, moving towards goals that were set out at the WSSD. It also builds on UNEP's past work on IA presented in its Reference Manual on the Integrated Assessment of Trade and Trade-Related Policies (hereafter, the Reference Manual) and incorporates lessons learned from UNEP's Round I and Round II country studies, a number of which focus on agricultural commodities.