I appreciate your insights into Congo, but I doubt that the fear of disease and therefore of strangers, is a suistainable base for all peace.
Rather the opposite. One reason more to fear and hate the neighbours.
1. one can avoid infection by avoiding proximity (so no waterborne disease for example),
2. knowledge of this is widespread,
3. avoidance of proximity is feasible, and
4. the increase in hatred is not sufficient to remove fear of death.
However, I think that most of these conditions are met in large parts of the DRC, apart from (1), where there is no such disease yet.
EDIT: Also (2) is endangered by the spread of unscientific beliefs; presumably political actors wouldn’t be attempting to convince others that Ebola doesn’t exist were there no possibility of succeeding in this venture.