If poverty, famine, and disease is already bad in sub-Saharan Africa, and is going to get much, much, worse in the future, at what point can the rest of the wor

If poverty, famine, and disease is already bad in sub-Saharan Africa, and is going to get much, much, worse in the future, at what point can the rest of the world safely wash their hands of the situation and say "you're on your own". If one contry cannot feed and sustain themselves should the rest of the world really carry this burden?