This report explores how the UN proactively employed the good offices of the secretary-general to open an impartial space for dialogue where none had previously been considered possible and closely participated in designing and implementing a transition process for Yemen that involved the inclusive National Dialogue Conference (NDC). The highly complex environment posed numerous challenges for mediation, and the report identifies the UN’s multifaceted and still-evolving contributions, as well as some missed opportunities, in Yemen’s transition and in responding to the country’s ongoing and escalating conflicts.