Previous research has primarily focused on the EU’s high-profile involvement as direct mediator in peace negotiations. Conversely, less attention has been devoted to the EU’s support to third parties’ mediation efforts, which is a significant component of its mediation activities. Addressing this research gap, this article develops a conceptual framework for the systematic analysis of EU mediation support, identifying key mediation support techniques and the conditions for their success. In terms of mediation support techniques,…