Formerly: President, WTTC; Executive Director, IATA; Assistant Secretary-General, UNWTO. Tourism Envoy; UNDP Administrator. Member, EU High Level Groups on Aviation Liberalization and on Tourism and Employment. President, International Council of Tourism Partners. Director, greenearth.travel. President, GateTrip. Visiting Professor, Victoria University, Australia, Hasselt University, Belgium, Oxford Brookes University, UK, Jeju National University, George Washington University, UK. Co-Editor: Green Growth and Travelism - Letters from Leaders; Green Growth and Travelism - Concepts, Policies and Practices for Sustainable Tourism.