Two approaches are introduced to model and analyze third party intervention, an important element in conflict resolution. These approaches are based on the GMCR framework. Although many studies discuss conflict resolution and conflict modeling, little work has been done on modeling third party interventions. The inverse approach to GMCR is introduced and investigated to find an optimal way to resolve a conflict. An historical conflict is analyzed using the introduced approach. Stability predictions based on different solution concepts are calculated, and the factors influencing third party intervention in a conflict are identified.