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It is nobody's business to interfere in a civil war.
Anonymous
Because violence, tribal wars have been going on in Africa for hundreds of years. The modern versions just mean a higher death toll
megalomaniac
A few factors: it was far away, violence in Africa is not uncommon, it would have been very difficult to fix, and there is no oil in the area.
R
Every day, somewhere, there are similar happenings. There are no resources/organisation or support to deal with them all. It's only down to a few individual countries to take any action.
Anonymous
They did not ignore it. The West just did not do enough against that. However, many people might have complained: look, the West interferes again...possibly for their own benefit (post-colonialism)....typically!
I know this especially from Muslims who want the West to get out of the Middle East and yet, when a crisis looms want the West to solve it by removing unpopular local aggressors (dictators, insurgency groups like the IS etc).