From the concept of intractability of armed conflicts, this article intends to develop a modelling exercise of negotiation between the actors involved. Through representation this joint, conceptual effort examines relations between elements constituting a negotiation process, assuming that the possibility to negotiate is a way to overcome deep-rooted, protracted, resolution-eluding conflicts. The model conceived is, at the same time, a working hypothesis and a functioning conclusion on the possibilities of negotiation from actors choices.