The Organisation for Security and Co-operation in Europe (OSCE) is the world’s largest regional security organisation, uniting 57 member states to promote peace, stability, and democracy. Through tools like the Vienna Document, election monitoring, and field missions, the OSCE fosters transparency, dialogue, and cooperation to prevent conflicts. Its comprehensive approach integrates military, economic, environmental, and human rights dimensions. While consensus-driven decisions ensure inclusivity, they can hinder swift action. Despite challenges, the OSCE remains vital in addressing evolving regional security risks.