Our position in the clinic is that, with regard to alleged atrocities on the ground, it is important to investigate and look at both sides. Indeed, there are alleged war crimes and crimes against humanity with regard to armed, non-state actor, separatist groups as well.
In terms of applying pressure, I think the Magnitsky sanctions are one way to go about this. In addition to looking at alleged government perpetrators, Magnitsky sanctions can be imposed, not just on government but also on non-state actors.