The field of border control in Mauritania

Abstract Recent work on borders has tended to overlook border control actors, practices and rationalities in West Africa. States in this region are considered origin and transit countries for irregular migration, and the Sahel region that they straddle is widely seen as an emerging haven of terrorist activity. This article discusses one response to these migration and terrorism threats by the Islamic Republic of Mauritania: a programmme to build new border posts with help from global partners that include the European Union and the International Organization for Migration. The article builds on Bourdieusian approaches in critical security studies, but draws on concepts from actor-network theory to account for the heterogeneity of border control actors and the mobility of different knowledges about how to control borders. Drawing on ethnographic research in Mauritania, the article discusses four ‘actants’ of border security: the border posts, the landscape, the biometric entry–exit system and training practices. Throughout, the article highlights field dynamics of competition, cooperation and pedagogy, also emphasizing the role of non-human agency. The article concludes with a reflection on the link between border control and statebuilding, suggesting that this fusion is a broader paradigm of security provision in the global South.