Monitoring the Spatial Evolution of Conflicts in North and West Africa (2021-22), PI, OECD
Inclusiveness and Diversity as Building Blocks of Resilient International Research Teams in the Age of COVID-19 (2021-22), Co-PI, National Science Foundation
Linking deforestation, urbanization, and agricultural expansion for land-use decisions in Ghana (2020-22), Co-I, NASA SERVIR-USAID
Trémolières M, Walther O, Radil S. (eds) 2021. Conflict Networks in North and West Africa. Paris, OECD Publishing.
Walther O, Miles W. (eds) 2018. African Border Disorders. Addressing Transnational Extremist Organizations. New York, Routledge.
Prieto Curiel R, Walther O, O’Clery C. 2020. Uncovering the internal structure of Boko Haram through its mobility patterns. Applied Network Science 5(28): 1-23.
Walther O, Dambo L, Koné M, van Eupen M. 2020. Mapping travel time to assess accessibility in West Africa: The role of borders, checkpoints and road conditions. Journal of Transport Geography 82, 102590.
Walther O. 2015. Business, brokers and borders: The structure of West African trade networks. Journal of Development Studies 51(5): 603-620.