Quite possibly the most naive article on an internal African conflict I've ever read...unless the implicit message is "leave the minerals for the grown ups in the international sphere to be concerned with;" in that context it just becomes abhorrent.
Is this man really so stupid to think that Rwanda, the U.S., businesses already profiteering off of tantalum based minerals and ores (among other metals) and the surrounding states won't take notice of this, and instead will just turn their backs and let the country sort everything out? Like they've turned their backs and let the country sort this civil war out...If this were to be done, you'd be dooming the state to the same exact fate that it has now.
But then again, this IS a guy who's been using his status to attempt to impede the self determination of an entire populace in Western Sahara.
As for Tecniec's question...I'd say (and this is just a postulation) that it's related to Kagame's political situation in Rwanda, as well as the history of intervention in DRC affairs since Uganda and Rwandan forces helped overthrow Mobutu Sese Seko in 1996-1997. To the second point, millions of Hutus fled the country, a large amount of them to the DRC after the Rwandan Genocide, pursued by forces led by Kagame, creating a huge refugee population there. About half returned (600,000 from the DRC), which, naturally, led to serious destabilization within the country. Related to that (and to the first point) is the lack of political freedom within Rwanda itself. Kagame's regime is repressive of the press, political dissent and extrajudicial and politically motivated murders. Kagame essentially treats his government as a State of Exception, for the good of his allies only.
So yeah, this is a way of him deflecting a problem within his own country, as well as a fear of invasion by a country whose affairs he's been meddling in for 16 years running now.
(This is, of course, the extremely simplified version of events.)