The International Food Policy Research Institute (IFPRI), established in 1975, provides research-based policy solutions to sustainably reduce poverty and end hunger and malnutrition. IFPRI's strategic research aims to foster a climate-resilient and sustainable food supply; promote healthy diets and nutrition for all; build inclusive and efficient markets, trade systems, and food industries; transform agricultural and rural economies; and strengthen institutions and governance. Gender is

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... ed in all the Institute's work. Partnerships, communications, capacity strengthening, and data and knowledge management are essential components to translate IFPRI's research from action to impact. The Institute's regional and country programs play a critical role in responding to demand for food policy research and in delivering holistic support for country-led development. IFPRI collaborates with partners around the world. AUTHORS Wim Marivoet Abstract v Acknowledgments vi v ABSTRACT To fill in the data gap in terms of both quality and quantity, researchers and policymakers alike are forced to rely on surveys which often come with different metrics and methodologies for similar concepts. In this paper we develop a policy-relevant typology using different intervention types and nutrition constraints. Our approach is based on an amendable demarcation of areas within a four-indicator diagram, each of which represents a core dimension of food and nutrition security (FNS), which makes our typology conceptually sound, operationally flexible, and less data intensive. The derived typology is applied to rural territories of the Democratic Republic of the Congo (DRC). Despite a continuum of heterogenous development challenges across the country, the typology helped identify various clusters of territories which suffer mostly from production, access, and utilization constraints. Consequently, for the nine territories (out of 145) with the highest child stunting levels, we identified four broad intervention zones and studied the efficiency profile in more detail. There is still room to improve the proposed typology, especially with respect to the construction of reliable and comprehensive measures for each FNS dimension. Indeed, in addition to improvements in accuracy and coverage regarding agricultural potential, food acquisition, and nutritional status, high-quality data are urgently needed to capture well agricultural production in the DRC.