Ambassador Tibor Tóth has more than three decades of leadership experience in UN and multilateral matters. Tóth served as Ambassador and Permanent Representative to the United Nations Office in Geneva (1990–1993 and 2003–2005), Vienna (1997–2001) and The Hague (1993). In between 1986 and 2013, Tóth participated in all sessions of the UN General Assembly and its subsidiary bodies in New York. Tóth served as Deputy State Secretary of Defense responsible for international affairs (1994–1996). Ambassador Tóth chaired several global intergovernmental diplomatic conferences and fora, including on all types of weapons of mass destruction, for an accumulated period of 25 years. He was member and Chair of the Weapons of Mass Destruction Global Agenda Council of the World Economic Forum (2011-2013). From 2005 to 2013, Ambassador Tóth was the executive head of the Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO). CTBTO has some 180 member states, operates a global system of around 500 monitoring and communication facilities supported by 5000 contact points around the globe, representing a 1 billion dollar investment. He was the first ever head of a global intergovernmental organization elected from the Eastern European region. He is Executive Secretary Emeritus of the CTBTO and Fellow, Member of the Board of Trustees of the World Academy of Art and Science.