1976

October: Pugwash symposium in Feldafing 

1977

August: 27th Pugwash conference in Munich
August: 14th European conference of the Peace Science Society in Mannheim
December: 7th conference of the International Peace Research Association in Oaxtepec, Mexico

1978

September: 28th Pugwash conference in Varna, Bulgaria

1979

January: 8th Nordic conference for Peace Research in Turku
March: 20th conference of the International Studies Association in Toronto, Canada
April: Colloquium an of the University of East Anglia, Norwich on Euro-communism
April: Pugwash symposium on questions of European security in Helsinki
May: AFK/VVK conference in Brussels
July: 29th Pugwash conference in Mexico
August: 11th IPSA conference in Moscow
August: 8th IPRA conference in Königstein
September: IISS conference in Villars, Switzerland
October: ISA Section on Military Studies in Pittsburgh, USA
December: CBM workshop in Stockholm, Sweden

1980

January: Conference of the Federal Centre on Public Education in Köln
February: CBM workshop in Helsinki, Finland
March: 21st ISA conference in Los Angeles, USA
March: Lectures in Mexico City and in Toronto
June: Symposium of the study group on disarmament planning in Tübingen
June: Pugwash symposium in Wingspread, USA
July: conference of the University of Toronto in Bellagio, Italy
August: 30th Pugwash conference in Breukelen, Holland
September: 8th course of the summer school of ISODARCO in Venice, Italy
September: IISS conference in Stresa, Italy
October: Lecture at the University of Paris I (Sorbonne)
December: Pugwash symposium in London

1981

March: Lectures at the Universities of Colgate and Cornell
March: 22th conference of the ISA in Philadelphia
May: Participation in two consultations of the German Foreign Ministry (Auswärtiges Amt)
June: Conference on the crisis of strategic doctrines and their implications on the Third World in Mexico-City, Mexico

1982

March: 23rd conference of the ISA in Cincinnatti
March: Lecture at a symposium at the University of Pittsburgh on: "The Soviet threat to Western Europe"
August: Four presentations at the Pugwash conference in Warsaw, Poland
September: IISS conference in Scheveningen, Netherlands

1983

March: 24th conference of the ISA in Mexico-City
March/April: Chairmanship of the German delegation at a German American work-shop in Carlisle Barracks, Pennsylvania, USA
April: Conference of the Danish Commission for Arms Control in Ebeltoft, Aarhus, Denmark
October: Lecture at a conference of the Danish independent peace movement on disarmament and human rights in Copenhagen

1984

April: 25th ISA conference in Atlanta, Georgia, USA
June: Lecture at a conference with delegates at the European disarmament conference in Stockholm
September: Several lectures during a trip to eight countries of Southeast and East Asia in Bangkok, Tokyo, Hiroshima, Seoul, Taipei and Kuala Lumpur
November: Presentation at a meeting of the Peace Research Institute in Groningen on Non-Nuclear War in Europe

1985

February: Chair and presentations at the 1st AFES conference in Weil-der-Stadt
March: 26th ISA conference in Washington, D.C.
May: Presentation at a conference of the University of Minnesota in Wingspread
May: Presentations at the Georgia Institute of Technology, Atlanta
June: Two presentations at a German-French conference in Paris
July: Presentations at the 2nd AFES conference on SDI and Europe in Weil-der-Stadt
December: Presentation at a joint Hearing of the Foreign Affairs and Defense Com-mittees of the German parliament

1986

February: Presentation at the 3rd AFES conference in Mosbach-Neckarelz
February: Lecture at a conference of the Greater London City Council in London
March: 26th ISA conference in Anaheim
April: Lectures at Georgetown University, at the Institute for East-West Security Stu-dies in New York, at Harvard and Brown Universities and in Ottawa
April: Presentation at a conference on Nuclear War Education in Washington, D.C.
April: Participation at the IPRA conference in Brighton and chair of a study group
July: Participation at a consultation of the Alternative Defence Commission and of the University of Bradford in the UK
November: Participation at a ATBM-conference of the Free University of Amsterdam
November: Participation at a conference on verification questions in Hamburg
December: Presentation at a conference of Peace Research Institute in Frankfurt on arms control and détente in German American relations
December: Lecture at a German American conference on non-technical aspects of the Program on studying possibilities for a strategic defense in Tutzing

1987

April: Lecture at the invitation of the Canadian Institute for International Peace and Security in Ottawa, Canada
April: Presentation at a conference of the University of Montreal
April: Chair of three sessions at the 27th ISA conference in Washington on the ABM Treaty
May: Lecture at the NATO Defense College in Rome
July: Fellow of the US/European Summer School 1987 in East Sussex, England
September: Presentation at the Pugwash conference in Gmunden, Austria
September: Presentation at the 4th AFES conference in Mosbach-Neckarelz
October: Presentation at a meeting of the Section for International Politics of the DVPW
December: Lecture at the Institute for International Relations in East Berlin

1988

March: Presentation at a theory symposium on armament dynamics in Oslo, Norway
March/April: Presentation at the ISA conference in St. Louis
April: Presentation at a conference of the Amt Übungen und Studien of the Bundeswehr in Elmau Castle
May: Presentation at a conference of SAS in Freudenstadt in the Black Forest
June: Presentation at a conference of the Protestant Academy in Loccum
June: Presentation at a conference of the Tampere Peace Research Institute in Tampere, Finland and participation in a study group on the political consequences of nuclear disarmament
June: Presentation at a conference of the Finnish Peace Union, in Tampere, Finland
August: Presentation at a conference chair of a session at the IPRA conference in Rio de Janeiro
September: Chair of a specialist meeting on Defense Technology Assessment at the conference of the DVPW in Darmstadt
September: Chair of the 1st AFES-PRESS - INSTEAD workshop on questions of weapons technology in Mosbach-Neckarelz
October: 5th AFES-PRESS conference on questions of military doctrine and arms control in Mosbach-Neckarelz
November: Lecture at a German Danish Colloquium on Peace Research in cooperation with the Goethe-Institute in Copenhagen
Consultation of the Tampere Peace Research Institute in Copenhagen
December: Lecture at an annual meeting of the work group on arms research (AK Wehrforschung) in Bonn

1989

February: Participation at an expert consultation of UNESCO in Paris
March: Chairing of two sessions and speaker at the 29th conference of the International Studies Association in London
April: Chairing of a workshop of the IPRA Study Group: Weapons Technology and Disarmament in London
June: Lecture at a conference on "Theories of the International Relations" in Blaubeuren
July-August: TAPRI workshop on the consequences of nuclear disarmament in Europe in Lappeenranta, Finland
December: TAPRI workshop on the Consequences of nuclear disarmament in Europe in Mosbach
December: Chair of the 6th international AFES-PRESS conference: Verification and Arms Control in Mosbach (with 100 participants from 20 countries)
December: Presentation in a panel of the British International Studies Association (BISA) in Canterbury, Kent

1990

April: Presentation at the 30th conference of the International Studies Association in Washington
June: two working papers for an expert meeting of the Protestant Academy Loccum on the civilianising (“Zivilisierung”) of conflict
July: Presentation and chair of a commission at the IPRA conference in Groningen
November: Talk to the Fritz Erler Forum in Pforzheim

1991

March: Lecture to the Disarmament Department of the United Nations in the Secretariat General in New York
March: Lecture to the NGO-Committee at the United Nations in New York
March: Presentation at the 31st ISA conference in Vancouver in Canada
October: Presentation at the DVPW-conference in Hannover
October: Chair of the 7th AFES-PRESS conference in Mosbach with 70 participants

1992

February: Presentation to the IAUP/UN Commission on Arms Control Education in the UN General Secretariat, New York
February: Talk to the NGO Committee on Disarmament in the UN General Secretariat, New York
February: Talk to members of the disarmament, the legal departments and of the planning staff in the UN General Secretariat, New York
July: Talk in a commission at the IPRA conference in Kyoto
September: Presentation in the 1st commission of the Pugwash conference in Berlin
September: Chair and presentation of the commission on arms control at the first Pan European conference for international relations in Heidelberg

1993

March: Lecture at the Instituto Matias Romero de Estudios Diplomaticos, Secretaria de Relationes Exteriores, Mexico City, Mexico
March: Presentation in a panel for regional security and organizations of the ISA Conference  in Acapulco, Mexico
July: Lecture at the Seminar of the Universidad Complutense Madrid in Maspalomas, Canary Island
November: Lecture at a workshop with Complutense University Madrid in Mosbach

1994

April: Chair and presentation in a panel of the ISA conference in Washington, D.C.
April: Presentation at a ECPR workshop in Madrid
April: Presentation at a meeting with UNISCI (Complutense University Madrid)
August: Two presentations at the  IPSA Congress in Berlin
October: Lecture to the Austrian Arabic Society in Vienna
October: Lecture to a European Arabic conference in Toledo, Spain
November: Three presentations at the IPRA conference in Malta

1995

February: Presentation and cochair of a panel at the ISA-conference in Chicago
September: Presentation at the 2nd Pan European conference of ECPR in Paris

1996

July: Presentation at the IPRA conference in Brisbane in Australia
July: Guest Lecture to the Centre for European Studies at Melbourne University, Australia
September: Meeting at a EU Research Centre in Seville and meeting in Madrid on Migration from North Africa to Europe
September: Research visit in Washington and New York
November: Second EU-Rio Group dialogue on security questions in Quito, Ecuador
December: Presentation at a conference of STRADEMED and UNISCI in Madrid.

1997

March: Informal talk at a brainstorming on trilateral security cooperation at IRELA in Madrid
June: Informal meeting on Russian military plutonium in Paris
December: First Strademed Seminar in Madrid
December: Third EU-Rio Group dialogue on security questions in Santa Cruz (Bolivia)
December: Second Strademed Conference in Madrid

1998

August: 11th Advanced Studies Institute in Regional Science, München (paper giver)
August: Summer School of UIMP Santander, Spain (paper giver)
September: Third Pan-European Conference on International Relations in Vienna (co-chairman of a panel and paper giver)

2000

Speaker at two seminars in the context of a project of the Federal Environment Office on environment and energy policy of the Czech Republic (in the context of the pre-accession strategy of the EU)

September: Fourth Pan - European Conference on International Relations in Canterbury, England (Organiser of a Workshop on Environment Security in the Mediterranean Space with 10 sessions and about 30 speakers

March: Invitation to Seminars in Algiers and Oxford (no participation)March: Talk at a symposium of the Tata Energy Institute (New Delhi) in New York
June: Talk at a Side Event of the SBSTA 16 Meeting in Bonn
June: Talk at a Conference in the Foreign Office
June: Talk at a Conference of the Dutch Red Cross and of the Dutch Foreign Ministry
July: Keynote address at the first GMES Forum of the EU-Commission
November: Talk in Malta
December: Talk at a Conference of the Provention Consortium at the World Bank

January: Talk at a Meeting of Eurisy with support of the Council of Europe, European Commission, European Space Agency in Matera (Italy): Environment and Security Challenges in the Mediterranean until 2050 - Potential Contributions of GMES
Invited: Talk at the Joint Research Centre of the European Commission in Ispra (Italy) on: Security concepts and challenges
June: Osnabrück. VDW-Working Group on preventive arms control: Variability of the legitimation of missile defence systems in the  USA: 1945-2003
September: BMU Fachgespräch zur Internationalen Umweltpolitik als Instrument der Krisenprävention
October: Second Early Warning Conference in Bonn (UN-ISDR)
October: two presentations at a conference of the Austrian  Defence Ministry on  Mediterranean Security, Stability and Cooperation, in the Section on The Political and Security-political partnership and its Influence on Stability in the Region and at the workshop III: Conflict Dimensions in the Eastern Mediterranean Region: Factors of Risk and Instability
October: Congress on the Braunschweig Prize on environment and security
December: Keynote speech at  the NATO (CCMS) workshop on: Desertification as a Security Issue in Valencia (Valencia, Spain)
December: Talks at Capacity Building Seminar of the Post-conflict Assessment Unit of UNEP in Amman (Jordan).

28 January: Global Europe 2020 on North America with diplomats from Europe, the USA, Canada and Mexico
17 to 20 March: International Studies Associations (ISA) Convention in Montreal, Canada, chairing of two panels, presentation
27 March: Presentation at GDIN (Global Disaster Information Network) in Washington, and in Alexandria, Virginia.
29 March: Presentation at a Roundtable of the Friedrich-Ebert-Stiftung at the Carnegie Endowment for International Peace, Washington, D.C.
30 March: Presentation and book launch at the Stimson Center, Washington, D.C.
31 March: Presentation and book launch at the Wilson Center for Scholars, Washington, D.C.
9 to 12 May: Presentation at The Hague Conference on Environment, Security and Su­stain­able Development, Peace Palace, The Hague
5 to 9 July: 20th IPRA Conference in Sopron, Hungary, organisation of two panels, and scientific presentation in a section and a plenary
1 to 3 September: Turkish Ministry for Environment and Forestry, Ankara, Ankara Climate Change Conference, Presentation in section on Environmental, Social and Economical Aspects of Climate Change
5 to 6 September: Keynote Speech, NATO-ARW, Workshop in Lecce on "Lin­kages among Landscape assessment, quality of life and environmental security", for NATO CCMS Pilot Study "Use of Landscape Sciences for En­­vironmental Assessments".
8 to 11 September, The Hague: Fifth Pan-European Conference on International Relations in The Hague (Organizer of a Workshop on Reconceptualising Security).
30 September to 1 October: Expert Workshop on "Greenhouse Gas Emissions and Abrupt Climate Change: Positive Options and Robust Policy", IEA, Paris (participation)
10 to 14 October in Antalya, Turkey: Presentation at the 2nd Israeli-Palestinian-International Conference on “Water for Life in the Middle East“

10 May: Moderator: UNCCD, Global Interactive Dialogue: Desertification, Migration and Security, Bonn (CRIC 3)
June: EU-JRC: Sentre Workshop in Bonn
July: WZB, Berlin: Talk at book launch of A. Rechkemmer
August: First Global International Studies Conference, Istanbul, 24-27.August 2005
September: IV International Seminar On Security And Defence In The Mediterranean, 19 and 20 September, 2005, Palau de Pedralbes, Barcelona
September: 11th EADI Conference: Development and Insecurity, in Bonn
October: 6th   Open IHDP Forum in Bonn
November: Munich Re Foundation: Worldwide Disaster Prevention – Awareness is the Key

January: Protestant Academy in Iserlohn: Strategies of Combating Desertification and Human Security
Februar: Advanced Study Institute (ASI): Arrava College, Negev, Israel
March: Fourth World Water Forum, Mexico City, Mexico, talk in panel on: “Water related hazards, social vulnerability and risk management”
March: Workshop on “Early Warning, Social Vulnerability and Resilience. Hurricanes in the Gulf of Mexico: Case Studies on the response in the USA, Mexico, Haiti, Cuba and in Central America”, in Morelos in cooperation with United Nations University, Institute for Environment and Human Security (UNU-EHS and El Colegio de Tlaxcala
March: Presentations at the  National University of México (UNAM), and UAEM, Cuernavaca, Morelos
March: Presentations at El Colegio de Tlaxcala, Tlaxcala, Mexico
March: Third Early Warning Conference in Bonn
May/June: Presentation at the International Symposium On Building and Synergizing Partnership for Global Human Security and Development, Bangkok, Thailand, 30-31 May 2006
June: Presentation at the Chulalongkorn University, Bangkok, 5 June 2006: Between Globalization and Civil Literacy. A Human Security Course Planning and Applied Research Strategies Workshop.
July: Presentation at the UNU-EHS and Munich Re Foundation Summer Academy on Social Vulnerability, 23-29 July 2006, Castle Hohenkammer, Germany
October: Presentation at the International Symposium Desertification and Migration, Almeria, Spain, 25-27 October 2006.
October: Presentation at the Workshop on: Klimawandel - Zukunftsanalyse: Der globale Klimawandel und seine Konsequenzen für den gesellschaftlichen, wirtschaftlichen und politischen Wandel in den Regionen  Führungsakademie der Bundeswehr and Deutsches Institut für Entwicklungspolitik (DIE), Hamburg
November: Presentation at theLecture Series on Human Security, University of Bonn, United Nations University, Institute for Environment and Human Security, Bonn International Center for Conversion, 8.11.2006.
November: Participation in a Plenary Discussion on the  Role of Genebanks in Promoting the Use of Agricultural Biodiversity to Combat Desertification, Desert Research Centre, Cairo, Egypt, 27 November 2006.
November: Presentation at the Training Course on  the Role of Genebanks in Promoting the Use of Agricultural Biodiversity to Combat Desertification from 27 November – 7 December 2006 in Cairo, and El Arish, Sinai, Egypt, 27 November – 7 December 2006, Organised by theDesert Research Centre (DRC), Cairo, Egypt in cooperation with Biodiversity International, Rome. Sponsored by the Egyptian Ministry of Agriculture and Land Reclamation and the Egyptian Ministry of Foreign Affairs.
December: Presentation at the Workshop of the NATO Collaborative Linkage Grant on “Combating Desertification with Traditional Knowledge – A Contribution to Euro-Me­diterranean Security”, Rome (Italy), 5-6 December, 2006. Organized by   IPOGEA, Italian Research Centre on Local and Traditional Knowledge.

June: Presentation at the Universität Graz, European Training Centre, Klimawandel und Menschliche Sicherheit, 11. Juni 2007, 19.00, ETC Graz
June: Presentation at the European University Centre for Peace Studies, Schlaining, Austria
June: Presentation at a meeting of Ipogea and ITKNET (International Traditional Knowledge Network Conference), Florence
July: Vortrag Presentation at a meeting of the Spanish Environment Ministry and the Fundacion Biodiversidad on: Global Change and Desertification, Fuerteventura
November: Presentation at a workshop of the Heinrich Böll Stiftung, Green Wars? Environment between Conflict and Cooperation in the MENA Region, Beirut, Lebanon
December: Presentation at Energaia, Montpellier, France.

26 March: San Francisco, California, USA, 49th ISA Annual Convention, Presentation on Re­con­ceptualizing Security: Global Environmental and Climate Change as new Security Dangers and Concerns
1 April: Berkeley, California, USA, University of California, Berkeley, International and Area Studies, Peace and Conflict Studies; 2 Presentations on: Global Environmental Change and Security Impacts for Society und Securitization of Climate Change: Impacts for the Mediterranean
13 April: Cidhem, Cuernavaca, Morelos, Mexico: Presentation onGlobal Environmental Change and Security Impacts for Mexico
21 April: Washington, D.C., USA,  Union of Concerned Scientists, Presentation on Climate Change an International and Human Security Challenge and Opportunity for Multilateral Cooperation and Book Launch of Globalization and Environmental Challenges: Reconceptualizing Security in the 21st Century
22 April: New York, UNU-ONY, UN headquarter: book launch: Globalization and Environmental Challenges: Reconceptualizing Security in the 21st Century
23 June, Berlin: Auswärtiges Amt: book launch
26 June, Geneva: 12. EADI General Conference: book launch
14 July, Brussels, Belgium: Book launch co-organized by the Institute for Environmental Security, EGMONT – The Royal Institute for International Relations , and the EastWest Instituteand hosted byThe Centre
16 July: Sint-Michielskerk, Peace Church, Leuven: book launch
17 July: Löwen, Belgium:  IPRA Conference: Conceptual Quartet of Security, Peace, Development and Environment
25 July: Ljubljana, Slovenia: Second World Conference on International Studies, presentation on Goals and Achievements of the Mental Mapping on Reconceptualising Security in the 21st Century: The Security Handbook for the Anthropocene
26 September, Paris, IFRI: Presentation on Environment and Security: A Historic Link
8 October: Sharm El Sheik: EuroMesco and Al-Ahram Center for Political and Strategic Studies (ACPSS), Presentation on Soft Security Risks in the Euro-Mediterranean Area: What Justification for Increased Securitization?
13 October 2008:  Bonn, UNU-EHS, Presentation onClimate Change, Desertification and Environmentally-Induced Migration in the Western Mediterranean: Possible Scenarios for Southern Europe and North Africa by 2020 and 2050
17 October 2008: On the Vardhaman Mahaveer Open University, Jaipur, Rajasthan,  Reconceptualising Security in the 21st Century: The South Asian Context, Presenta-tion on Securitizing Global Environmental Change The Environmental Dimension of Human Security

17 February: 50 ISA Conference, New York: Presentation on: Securitizing Climate Change
12 March: Copenhagen, Presentation on Climate Change Impacts on Migration: Conflict and Cooperation in the Mediterranean
22 April, Berlin, Auswärtiges Amt: book launch of Facing Global Environmental Change Environmental, Human, Energy, Food, Health and Water Security Concepts
29 April, Bundestag, Bonn: book launch of Facing Global Environmental Change Environmental, Human, Energy, Food, Health and Water Security Concepts
29 April: IHDP OM, Bonn. book launch of Responding to Social Challenges Posed by Global Change: Knowledge and State, Societal and Business Actors
11 May: 17th  session of UN CSD, UNU-ONY, UN Headquarter, New York: Book launch : Facing Global Environmental Change Environmental, Human, Energy, Food, Health and Water Security Concepts
14 May: 17th  session of UN CSD, UNCCD, UN Headquarter, New York: Launching of the UNCCD Report: Grounding Security – Securitizing the Ground
17 June, Rathaus, Bonn, UNCCD: Securitizing the ground, grounding security
19 June, University of Vienna, lecture: Security in Peace Research and Security Studies
24 July, Stuttgart: book launch of Facing Global Environmental Change - Der globale Umweltwandel als Sicherheitsfrage
29. Juli, München:  book launch of Facing Global Environmental Change - Der globale Umweltwandel als Sicherheitsfrage und Globaler Klimawandel – Eine Herausforderung für die internationale und menschliche Sicherheit: 2 Diskurse sowie (mit Ursula Oswald Spring): Desertifikation, Bodenerosion und Dürre: Herausfor-derungen für die menschliche, nationale und internationale Sicherheit
13 October: UNAM/CRIM, Cuernavaca: Conferencia Magistral: Seguridad y su Reconceptualización
14 October: UNAM, El Programa de Posgrado en Ciencias Políticas y Sociales y el
Seminario Permanente de Estudios Prospectivos a través del Proyecto PAPIME Inteligencia Prospectiva. Conferencia Y Presentación Del Libro“Reconceptualizar La Seguridad En El Siglo XXI”
26 October: Opening session for: HS 15332 Climate Change Impacts: Securitization of Water, Food, Soil, Health, Energy and Migration
19 November: University of Hamburg: Conference: Climate Change, Social Stress and Violent Conflict;presentation on Policy respnse to climate change in the Middle East and North Africa and book launch 10 December: Presentation at book launch in Bern (Swisspeace).

2001