| 1977 | freelance journalist |
| 1978-1984 | studies contemporary history and international relations at the University of Groningen |
| 1980 | editor-in-chief of a publishing company specialised in journals and scientific publications |
| 1985-1989 | Political science department, University of Leiden, he was a lecturer in international relations, in particular international security (at the same time he worked as a jounalist at "De Volkskrant" and presenting a weekly programme on East-West relations and security issues in VPRO Radio) |
| 1989 | Appointed Head of the Defence Concepts Division of the Defence Staff at the Netherlands Ministry of Defence. He advised the Chief of the Defence Staff in matters relating to strategic plans and policy. |
| Doctorate at the University of Leiden |
| 1991-1993 | at the national level he laid the foundation of the Defence White Paper 1991 and the Defence Priorities Review, published in 1993. These white papers contain the plans for the reorganisation and the reduction of the Netherlands armed forces and for restructuring them from regular and conscript forces into all-volunteer forces. He was also responsible for the development of strategic management methods at the Ministry of Defence. Together with his staff he also contributed to studies and documents on behalf of NATO, NACC and the WEU/EU, including the Alliance Strategic Concept and supporting documents, as well as policy documents relating to peace support and crisis management. |
| 1993 | Member of the National Defence Research Council of TNO (1993). The Council forms part of TNO s Board of Management and is responsible for strategic policy relating to defence research. |
| 1997 | Secondment at the Clingendael Institute |
| 1999 | Professor in the field of International Relations, Royal Netherlands Military Academy, Breda |
| 2000 | Professor Strategic Studies, University of Leiden. Lectures on international relations, security and defence policy, European integration and crisis management. |
| 2003 | Director of the Clingendael Centre of Strategic Studies. The Centre is a joint venture of the Netherlands Institute for International Relations Clingendael and the Netherlands Organisation for Applied Scientific Research, TNO. |
| 2005 | Director of the Clingendael Security and Conflict Programme (CSCP), which also comprises the Conflict Research Unit (CRU) |
| 1970-1974 | Budapest University of Economics, Faculty of Diplomacy |
| 1974 | Desk officer, Ministry of Foreign Affairs, Budapest |
| 1977 | Doctor of political science |
| 1979 | Habilitation at Zrinyi Miklós National Defense University |
| 1981-1986 | Alternate Permanent Representative of Hungary to the International Atomic Energy Agency (IAEA), member and spokesman of the Hungarian Delegation to the Multilateral and Balanced Force Reduction (MBFR) negotiations, Vienna |
| 1987-1990 | Member of the Hungarian delegation to the Follow-up Meeting of the Conference on Security and Co-operation in Europe (CSCE), Vienna |
| 1990-1992 | Head of the Hungarian Delegation to the Joint Consultative Group, CSBMs and Open Skies, Vienna |
| 1992-1994 | Head of the Hungarian delegation to the expert meeting of the Helsinki Summit of the CSCE, Helsinki; Member of the Hungarian delegation to the Helsinki Summit Meeting of the CSCE, Helsinki; Head of the Hungarian expert Delegation to the London Conference on Yugoslavia |
| Head of Department for Security Policy and Co-operation in Europe, Ministry of Foreign Affairs, Hungarian Representative to the Council of Senior Officials of the CSCE, Budapest |
| 1993-1994 | Personal Representative of the Chairman-in-Office of the CSCE to Georgia, Budapest-Tbilisi |
| 1993 | Head of the Hungarian delegation to the Preparatory Meeting of the CSCE Summit, Budapest |
| 1994 | Executive Secretary of the Budapest Summit Meeting of the CSCE |
| 1994-1995 | Chairman of the Senior Council of the OSCE, Personal Representative of the Chairman-in-Office of the OSCE to Chechnya, Nagorno Karabakh, Moldova, Budapest |
| 1996 | Personal representative of the Chairman-in-Office of the OSCE to the negotiations on confidence- and security-building measures in Bosnia and Herzegovina |
| 1996-1998 | Deputy State Secretary of Integration, Ministry of Defense, Budapest |
| 1998-1999 | Under-secretary of Policy, Ministry of Defense, Budapest |
| Chairman of the Missile Technology Control Regime, Budapest |
| 1999-2000 | Special Adviser to the Minister of Foreign Affairs of Hungary, Budapest |
| Chairman of the Organization for the Prohibition of Chemical Weapons |
| 2000-2003 | Senior Vice President of the EastWest Institute |
| since 2004 | Member of the advisory board of the Prime Minister of Hungary |
| 2004 | Head of the OSCE/ODIHR Election Monitoring Mission in Moldova |
| 1994 | M.A. in Political Science, Contemporary History, Sociology and Psychology from the University of Munich |
| 1996 | Ph.H. from the University of Munich |
| 1995-1996 | Research Associate, Stiftung Wissenschaft und Politik (SWP), Ebenhausen |
| 1996-1998 | Postdoc, Free University of Berlin |
| 1998-2002 | Lecturer/Senior Lecturer, Humboldt University of Berlin, Research Fellow, German Research Council (DFG) |
| 2000 | Habilitation / venia legendi from Humboldt University Berlin |
| 2002-2004 | Visiting Professor, Munich School of Political Science (HfP) |
| | Court-practice, Military Service |
| | Work at the Ministry of Finance, Ministry for Science and Research, Ministry of Foreign Affairs and at the Office of the Federal Chancellor (Dept. for Developing Aid) |
| | Longtime Head of the Ludwig Boltzmann Institute for Political Sociology |
| since 1983 | Ministry of Defence |
| 1986-1997 | Director General, Executive and Law Department |
| | Lecturer at the Universities of Graz and Klagenfurt |
| | Preparation and management of numerous scientific meetings (conferences) |
| | Honorary Professor for International Relationes at the University of Graz |
