As with other wars, political families, conflicting interests from previous conflicts come back to haunt...my perception originally was that the Tutsi Hutu conflict played a major role in the Second Congo war, probably even fanned the flames more...
that it was a catalyst and a math, absolutely. That it was the cause. No.

Global Security has a pretty good write up

You are correct about the 2nd War and the halt of the Rwandans--Gribbin's book is pretty good on that issue. I was thinking of the original march to Kinshasa. In any case, I would not describe it as Beirut.

hope it helps and welcome to SWJ

Tom