What a major employer is capable of and not in Rwanda? (3)

I believe the answer is:

war

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'rwanda?' is the definition.
Although both the answer and definition are singular nouns, I don't understand how one could define the other.

I don't understand the rest of the clue.

Can you help me to learn more?

(Other definitions for war that I've seen before include "Sustained conflict" , "Major conflict" , "Open hostility" , "Hostile situation" , "Period of hostilities" .)

I've seen this clue in the Irish Times.

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