The paper reviews the role of wheat and maize value chains in food security in Africa and Asia, highlighting the challenges of meeting growing demand while facing environmental constraints and climate change. It emphasizes the need for continued investment in research and development, particularly for increasing productivity and sustainability of these crops, as well as for promoting sustainable intensification practices and diversifying diets.

The authors acknowledge funding from the CGIAR Research Programs on Maize and Wheat, which could potentially introduce bias in favor of these crops.

The review provides a comprehensive overview of the drivers of change in wheat and maize value chains and their implications for food security in Africa and Asia. The focus on specific value chains is a strength, as is the discussion of different dimensions of food security. However, the reliance on secondary data and the uneven emphasis on food security dimensions are limitations. The identified COI related to funding warrants a slight rating reduction, but given the limited influence it seems to have, the paper merits a positive evaluation.