In 2016, the Operations Department commissioned a critical review of the operations carried out between 2015 and 2016 in Borno State by MSF France in the north east of Nigeria. In response, and with the help of Epicentre, Judith Soussan and Fabrice Weissman from CRASH produced a detailed historical account of the analyses made of the situation by the teams, capital and headquarters at the time, as well as the objectives they set themselves, the actions they undertook, the obstacles they encountered and the results they achieved. As part of this project, some of the directors and operations managers who had been involved in these operations took a retrospective look at their own practices: were they late in responding to the catastrophic situation in the IDP camps in rural areas and on the outskirts of Maiduguri, the capital of Borno State, in 2016 and, if so, why? What conclusions can be drawn a posteriori about the operational choices made and the effectiveness of MSF intervention strategies? And, to take things a step further, what does this experience teach us about how MSF functions and how our teams work? Interview with Isabelle Defourny, Operations Director at MSF-OCP. By Elba Rahmouni.