Leadership has been identified as a key factor in supporting action on nutrition in countries experiencing a high burden of childhood undernutrition, but there have been very few systematic studies of what supports or constrains leadership in nutrition. A new IDS Working Paper by Nisbett, N., Wach, E., Haddad, L., and Shams, E.L. has just been published on what supports or constrains effective leadership in nutrition. It is based on a 4 country set of interviews by Transform Nutrition .