Professor Theib Oweis is Director of the Water, Land and Ecosystems Program (WLEP) at the International Centre for Agricultural Research in the Dry Areas (ICARDA). He is a jointly appointed Distinguished Professor - International Platform for Dryland Research and Education at Tottori University, Japan. Professor Oweis is widely regarded as one of the world’s leading authorities on water management in agriculture. Henk Ritzema is a former Associate Professor at the Water Resources Management Chair Group of Wageningen University. He retired in September 2020. Henk Ritzema has published over 160 articles, books and reports and is a regular invited speaker at international conferences and workshops.