This will what happen when afghainstan can't control it's border and terrorists fleeing Pakistani assault find refuge in Nuristan and Kunar provinces. Something to ponder about Sher Malang. You paint rosy and glossy picture of ANSF. Why not they do a clean up operation in Kunar and Nuristan or man the border properly?
Simple the terrain in kunar is more difficult than to that of North Waziristan.