Ali Abdel Aziz Salih is currently an associate professor in the Department of Agricultural Economics, University of Khartoum. He received his PhD in Agricultural Economics from Purdue University, USA in 1993. His main speciality and interests are in the area of development, resource economics and policy. He has many published papers with other authors in CGE modelling for Sudan, multimarket model analysis application to cotton in Sudan, poverty alleviation and food security.