Ambassador Thomas Greminger is the Director of Geneva Centre for Security Policy (GCSP). He formerly served as the Secretary General of the Organization for Security and Co-operation in Europe (OSCE). As Secretary General, he acted as an effective crisis manager supporting successive Chairmanships in an increasingly polarized environment. In the final months of his term, he dealt with the COVID-19 crisis, working to protect the health and safety of staff while ensuring that the OSCE continued to carry out its critical mandates and maintained business continuity. Ambassador Greminger holds a PhD in history from the University of Zurich. He is Lieutenant Colonel GS (company and battalion commander of infantry unit of the Swiss Armed Forces; G6 and Deputy Chief of Staff of Infantry Brigade). He has authored numerous publications on military history, conflict management, peacekeeping, development and human rights.