This survey research article examines the mandate, implementation, and perceived effectiveness of the Intergovernmental Authority on Development (IGAD) Security Sector Programme (ISSP) within the Ugandan context. Drawing on primary survey data collected from Ugandan security sector personnel, government officials, and civil society stakeholders, the analysis evaluates the programme's alignment with national security priorities, its operationalisation mechanisms, and its tangible outcomes. The findings reveal significant insights into the challenges of regional security integration, capacity-building efficacy, and the interplay between regional mandates and domestic bureaucratic processes. The article concludes with policy-relevant recommendations for enhancing the programme's impact and coherence within Uganda's security architecture.