Deano not too sure where all these civil wars you are talking...

Deano not too sure where all these civil wars you are talking about are.Of Congos 9 or 10 neighbours Sudan over 1000 km north of Lumbumbashi is the only one I can think of and the recent troubles with the Uganda are about the same.
Line to Lobito bay I thought was functional as is the Dares Salaam to the east.
Zambian copperbelt is just over the border and no-one ever considers that a problem.
Maputo Beira and Durban could all be reached by rail or road so there are plenty if options .
Good luck