This includes 1.6 million children who are already considered "severely malnourished."
If food does not arrive soon, the numbers of deaths across Yemen, South Sudan, Somalia and northern Nigeria will soon begin to skyrocket.
The world may stumble into the worst mass death event since World War Two.
"It is a famine if 20% of the people are starving, 30% of children under 5 are suffering severe malnutrition and death rates are two per 10,000," says Arif Husain, Chief Economist of the UN World Food Program.
Parts of South Sudan have already crossed that threshold. Elsewhere in South Sudan and parts of those other three countries are on the precipice. UN Dispatch