Risks, chaos, resilience. Facing total crises: Cassandra, the State and its double" deals with the prevention and study of threats. Indeed, since the end of the Cold War, we have witnessed a mutation of threats and dangers, as they have been taken out of the usual framework of study. It is therefore necessary to renovate strategic thinking in the face of these threats. A new way of thinking is emerging, embodying this idea: the concept of global security. It is opposed to the inability of administrations to anticipate and their tendency to analyze exclusively in a retroactive manner. The current health crisis thus highlights this inability to anticipate, characterized by a lack of communication, giving way to the massive dissemination of fake news from all sides, and undermining the relationship of social trust between the state and the population. Reacting is already a setback. The Nation must be able to foresee and anticipate, to react and prevent.