• International trade policy, World Trade Organization (WTO), EC trade policy, Preferential trade agreements, Development.
• Services, evaluation of public policies, Regulatory impact assessment, European Single Market, competition policy.
• Millennium Development Goals, Development.

• Economics of European Integration, PSIA
• Politique commerciale, Research Master (Economics of International Relations)
• Atelier économique, Research Master (Economics of International Relations)
• WTO Seminar, Research Master (Economics of International Relations)
• Economie internationale, Master Affaires internationales (Politique économique internationale)

• Gastprofessur, Raymond Barre-Stiftung, Johann Wolfgang Goethe Universität, Frankfurt Am Main, 2006.
• Visiting Professor, Keio University, September 1996, September 1998, October/November 2011.
• Professeur, Institut d’Etudes Politiques, Paris, depuis 1990
• Visiting Professor, Simon Fraser University, Vancouver, Canada, Summer 1984.
• Professeur des universités, 1981
• Visiting Assistant Professor, University of Houston, Texas, USA, Winter 1977.

• Co-Chair, Task Force on Global Finance and Trade Architecture, World Bank and UK Department for International Development (2008-..)
• Deputy-Chair, Global Agenda Trade Council, World Economic Forum, (Member since 2009), 2011- ..
• Chairman, Global Agenda Trade Council, World Economic Forum, 2010-2011 (Member since 2009).
• Co-chairman, with Jean-Pierre Chauffour, World Bank, of the International Advisory Committee on Preferential Trade Agreements. World Bank, German Marshall Fund and GEM.
• Chairman, European Center for International Economic Policy, Brussels (2006-..).
• Co-chair with Ernesto Zedillo (former President of Mexico, director, Yale Center for the Study of Globalization) of the Task Force on Trade for Development, United Nations Millennium Devlopment Goals (2003-2005).
• Special Adviser to Mike Moore, WTO Director General (2001-2003).
• Trade adviser, Stability Pact for South Eastern Europe (2001-2006).
• Senior Economist, World Bank (1986-1990).
• Member of the International Advisory Board, Acta Oeconomica Review, Budapest.

Editorial activities:

• Member of the publication committees of the following journals and publishers:
  - The Journal of International Economic Law, (editor: John Jackson, Georgetown University) since 2000.
  - Acta Oeconomica, Budapest (editor: Adam Torok) since 2000.
  - The World Economy (editors : David Greenaway, University of Nottingham et John Whalley, University of Warwick) 1991-1999.
  - The European Journal of Political Economy (editors : A. Hillman, S. Nitzan et H. Ursprung), North Holland Publishing Company, 1994-1998.
  - Studies in International Trade Policy," University of Michigan Press, 1990-1996.
• Referee for American Economic Review, European, Economic Review, Journal of International Economic Law, Economies in Transition, The World Economy, Weltwirschaftliches Archiv, etc.

• The EU-Georgia negotiations on a Deep and Comprehensive Free Trade Agreement. GEM and CEPS working paper. (with M. Emerson, G. Jandieri and A. Le Vernoy), 2011.
• .Aid for Trade: A Meta-evaluation. OECD Working Paper (with C. Delpeuch, M.-A. Jouanjean, A. Le Vernoy, and T. Orliac)(To be published by the OECD), 2010
• Water and the WTO: Don’t kill the messenger, (with A. Le Vernoy), 18 November 2010. Presented at the Workshop on “Accounting for water scarcity and pollution in the rules of international trade”, Amsterdam 25-26 november 2010.
• The Doha Round, Forthcoming in A. Lukauskas, R. M. Stern, and G. Zanini (eds.), Handbook of Trade Policy for Development, Oxford University Press, 2010.
• A note on International Trade, Korea-Canada-France G20 Seminar, 26 September 2010.
• New challenging issues for world trade and the world economy: Strategies for the EC-Turkey Custom Union. May. (To be published), 2010.
• Climate change and trade policy: From mutual destruction to mutual support, April. Available in the World Bank Policy Research Working Paper Series (WPS 5378).
• Globalisation and deglobalisation, A few remarks on two issues, March. Note for the European Round Table.
• The European Community commercial policy, February. Forthcoming in M. Kreinin and M. Plummer, Handbook of International Commercial Policy, Oxford University Press, 2010.
• 2020 European Agriculture: Challenges and Policies (editor with P. Boulanger). German Marshall Fund and GEM, 2010.
• A significant slippage in protectionism? Not yet. In S. Evenett, B. Hoekman and O. Cattaneo (editors). “Effective crisis response and openness: Implications for the trading system.” World Bank and CEPR. Washington and London, 2009.
• The world trade regime, the WTO and large scale economic crises. Paper to be presented at the Asia Pacific Trade Economists’ Conference, November 2, Bangkok, United Nations ESCAP and IDRC, 2009.
• Leading with Services: The Dynamics of Transatlantic Negotiations in Services (with E. van der Marel), July. Available on GEM website://gem.sciences-po.fr, 2009.
• Too early to cry wolf, in The fateful allure of protectionism: taking stock for the G8, Edited by S. Evenett, B. Hoekman and O. Cattaneo. World Bank and CEPR, 2009.
• Walking a Tightrope: World Trade in Manufacturing and the Benefits of Binding, German Marshall Fund of the United States, available on://gem.sciences-po.fr , 2008.
• La Loi sur la modernisation de l’économie et la distribution: Faut-il tout essayer avant de faire ce qu’il faut ? May. available on GEM website://gem.sciences-po.fr, 2008.
• Redesigning the European Union’s trade policy strategy towards China (with J. Wang) , Published in 2008, Oxford University, available on GEM website://gem.sciences-po.fr, 2008
• Why is it so difficult? Trade liberalization under the Doha Agenda. Martin, W. and P. Messerlin, 2007. Oxford Review of Economic Policy, Vol 23(3), pp. 347-366, 2007.
• Assessing the EC Trade Policy in Goods, Jan Tumlir Policy Essays, ECIPE, April 2007, available on GEM website://gem.sciences-po.fr
• The Doha Negotiations on Trade in Goods: At a Crossroads, German Marshall Fund of the United States, available on GEM website://gem.sciences-po.fr, 2007.
• How Much Further Can the WTO Go? Developed Count ries Issues, CEPR and Kiel Institute, available on GEM website://gem.sciences-po.fr, 2007.
• Reflections on the Trade Reforms and Policy Implications, in "Coping with Trade Reforms: A Developing country perspective on the WTO Industrial Tariff Negotiations", by Sam Laird and Santiago Fernando de Cordoba, pp. 218-226, UNCTAD, Palgrave Macmillan, 2006.
• Europe after the “No” Votes, Institute for Economic Affairs, 2006.
• Trade for Development, (with Ernesto Zedillo et Julia Nielson) Task Force of the Millennium Project, United Nations, 2005.
• Preparing Negotiations in Services: EC Audiovisuals in the Doha Round (with Emmanuel Cocq and Stephen Siwek), AEI Studies in Services Negotiations, 2004.
• Harnessing Trade for Development and Growth in the Middle East, (with Bernard Hoekman) Council on Foreign Relations, 2002.
• Measuring the Costs of Protection in Europe : European Commercial Policy in the 2000s, Institute for International Economics, 2001.