This article will focus first on the method of mediation, acknowledging its role as one of the most commonly applied and studied forms of intervention in conflicts. This will set the larger stage for a consideration of the various forms and functions of third-party intervention, some of which draw their appeal from their supplementary nature to mediation and negotiation. A rudimentary model for matching types of interventions to the stage of conflict escalation will be presented as an initial heuristic for realizing the potential complementarity of different forms of intervention. Finally, a number of issues will be identified that can affect the overall current and future usefulness of third-party intervention in addressing the multitude of destructive conflicts that regularly beset humankind.