The key economic and market developments which provide the framework for the implementation of agricultural policies are analysed in the first part of this chapter. Highlights are then presented of the main recent changes and new initiatives in agricultural policies in 2013-15 in OECD countries and key emerging economies covered in this report. Then the developments in the estimated support (using the OECD Producer Support Estimate methodology) are evaluated in terms of its level, composition and changes over time in OECD countries and the emerging economies included in this report.