This Regional Programme Evaluation focuses on the Arab States Regional Intervention Action Plan 2018-2021. The purpose of the evaluation was to demonstrate accountability to stakeholders on the performance achieved; to support evidence-based decision-making; to contribute important lessons learned to the knowledge base of the organization; and, in turn, to provide independent inputs to the next Regional Interventions Action Plan and the strategic direction of the continued role for UNFPA ASRO support to the country offices in the region.