Rwanda aims to become the Singapore of Africa—rich and stable. But has stolen Congolese wealth at least contributed to Rwanda’s successes?

I’ve just tweaked the newest version of the Drone Child novel. Tiny and Demon Killer, my murderous Congolese rebels, are now secretly bankrolled by Rwanda and Uganda—not just by a corrupt plantation owner and his friends and family.

That’s only appropriate, given all the meddling that those two dictator-bossed countries have done in the Democratic Republic...