Foreign Minister, Algeria 1991-93
UN Special Adviser to the Secretary-General 2004-05

Prime Minister, Armenia 1996-97

President, Republic of South Africa 1989-94

Foreign Minister, Australia 1988-96
President and CEO of the International Crisis Group 2000-09

Austria, Federal Chancellor 2000 – 2007
Foreign Minister 1995 - 2000

President, Botswana 1998-2008

Prime Minister, Canada 1979-80
Secretary of State for External Affairs 1984-1991

UN Deputy Secretary-General, 1998 – 2006

Minister for Foreign Affairs, Chile, 1999
Chilean Ambassador to the UN, 2000-03

Foreign Minister, Côte d'Ivoire 1990-99
Secretary General, OAU 2001
Chairman, AU Commission 2002-3

Director General,  International Atomic Energy Agency 1997-2009
Interim Vice President, Egypt 2013

United Nations Under-Secretary-General for Peacekeeping Operations 2011 - 2017

Prime Minister, France 2002-05

President, Ghana 2001-09

Vice President, Guatemala, 2004-08
Foreign Minister 1996-2000

Vice President, India 2007–17
Ambassador to the UN 1993-95

Attorney General, Indonesia 1999 to 2001
UN Special Rapporteur, DPRK, 2010-16

Director General, International Atomic Agency 1997-2009
Interim Vice President, Egypt 2013 

Prime Minister, Jamaica 1992-2006

President of Latvia, 1999 – 2007

UN Special Advisor to Secretary-General, 2003-06
Lebanese Minister of Culture, 2000-03

President, Liberia 2006-18

Prime Minister, Malta 2004-13
Minister of Finance, 2004-08
Minister of Social Policy, 1998-2004

President, Mauritius 1992-2002

President, Mexico, 2000-06

Prime Minister of New Zealand 1999–2008
Administrator of the UNDP 2009-2017

UN Under-Secretary-General 1999-2007

Minister of Foreign Affairs, Peru 2016-2018

President, Republic of the Philippines 1992-98

Finance Minister, Rwanda, 1997-2005
President, African Development Bank 2005-2015

Prime Minister of Senegal 1983 & 2000-01

President, Republic of South Africa 1989-94

Secretary General, Council of the European Union 1999-2009
Secretary General, NATO 1995-1999
Foreign Minister, Spain 1992-1995

Foreign Minister, Spain 2002-04

Prime Minister, Sweden 1991-94
Foreign Minister 2006-14

President of the Swiss Confederation 2007 and 2011
Head of the Department of Foreign Affairs 2003-11

President, Swiss Confederation 1995 & 2002
Defence Minister 1989-1995
Finance Minister 1996-2003

Prime Minister, Tanzania 1984-1985
Secretary-General of the OAU, 1989 – 2001

Secretary General of UNCTAD, 2005-2013
Director General of WTO, 2002-2005
Deputy Prime Minister, Thailand, 1997-2000

President, Timor-Leste 2007-12
Prime Minister 2006-07

Deputy Prime Minister, Turkey, 1978-79 and 1995
Foreign Minister, 1991-94

Foreign Minister, Uruguay, 1985-1988
President of the Inter-American Development Bank 1988-2005

Minister of Overseas Development, UK 1989-97

Secretary General of NATO 1999-2004
UK Secretary of State for Defence, 1997-99

US Assistant Secretary for African Affairs 1981-89

US Ambassador to the UN 1979-81