Director of studies at Crash / Médecins sans Frontières, Michaël Neuman graduated in Contemporary History and International Relations (University Paris-I). He joined Médecins sans Frontières in 1999 and has worked both on the ground (Balkans, Sudan, Caucasus, West Africa) and in headquarters (New York, Paris as deputy director responsible for programmes). He has also carried out research on issues of immigration and geopolitics. He is co-editor of "Humanitarian negotiations Revealed, the MSF experience" (London: Hurst and Co, 2011). He is also the co-editor of "Saving lives and staying alive. Humanitarian Security in the Age of Risk Management" (London: Hurst and Co, 2016).

A political scientist by training, Fabrice Weissman joined Médecins sans Frontières in 1995. First as a logistician, then as project coordinator and head of mission, he has worked in many countries in conflict (Sudan, Ethiopia, Eritrea, Kosovo, Sri Lanka, etc.) and more recently in Malawi in response to natural disasters. He is the author of several articles and collective works on humanitarian action, including "In the Shadow of Just Wars. Violence, Politics and Humanitarian Action" (ed., London, Hurst & Co., 2004), "Humanitarian Negotiations Revealed. The MSF Experience" (ed., Oxford University Press, 2011) and "Saving Lives and Staying Alive. Humanitarian Security in the Age of Risk Management" (ed., London, Hurst & Co, 2016). He is also one of the main hosts of the podcast La zone critique.