Recent forecasts by the Food and Agriculture Organization of the United Nations (FAO) have indicated a risk of locust invasion in West Africa from June 2020. From East Africa, some swarms could reach the eastern part of the Sahel and continue westwards from Chad to Mauritania. Surveillance and control teams will be mobilized across the region with a focus on Burkina Faso, Chad, Mali, Mauritania, and the Niger, and extended to Senegal. Countries such as Cameroon, the Gambia and Nigeria are also on watch in the event that desert locust spreads to these highly acute food-insecure countries. Since the region could be threatened in the coming months, FAO is strongly encouraging no regret investments in preparedness and anticipatory action to control swarms and safeguard livelihoods, given already high levels of acute food insecurity. Therefore, cost estimates for preparedness, anticipatory action and rapid response have been assessed.