The debate on monetary sovereignty in emerging countries is resurfacing with, on the one hand, the plan of Argentinian President Javier Milei to dollarise his economy, and on the other, the temptation of several West African country leaders to abandon the CFA franc. The abandonment of the CFA franc with the aim of recovering the flexibility of an unpegged exchange rate regime and greater autonomy of monetary policy, is an argument that is either weak in theory or unconvincing in practice.