Are they near any oil fields like the one ISIS has?
So does it come down to Rwanda was not near any oil fields, and neither was Sudan near any, so we didn’t care about those countries?
Nigeria has some oil fields, but is this because it is also in sub-Saharan Africa in addition to the aforementioned that makes the US not want to intervene?
All of them being sub-Saharan seems to be a commonality among each, but another commonality among these three is that they are all majority black, too.