As Orwell taught, it is not that some lives are less valuable than others but that some are more equal than others, borrowed from Animal Farm.

Those who have much, tend to be the ones who want more, and then some more. They find no happiness in what they have.

Sudan the DRC are either ignored because they have no intrinsic value to the rest of the world or because the cobalt and other minerals are so important to the rest of the world, that everything will be overlooked, so long as they get theirs.