[@Muttonhawk] Nop, this is just the ebb and flow of a nomadic region - one tribe rises above the others and subjugates them, maybe they attack a few other cultures or are attacked, great leader dies and everything disintegrates. Another tribes rises up and subjugates the rest, attack a few others maybe, then he dies and everything falls apart.

If Shaqmar succeeds in uniting the Rukbans he would naturally turn on Vetros which is long-term Rukban raiding destination.

Edit: or he might press further north into the Great Steppe