Hon. George H. W. Bush President of the United States (1989 - 1993)
Hon. Bill Clinton President of the United States (1993 - 2001)
Hon. George W. Bush President of the United States (2001 – 2009)
Hon. Al Gore Vice President of the US (1993 - 2001)
Hon. Robert B. Zoellick President of the World Bank Group (2007 - 2012)
Hon. François Hollande President of France (2012 - 2017)
Hon. David Cameron Prime Minister of the UK (2010 - 2016)
Hon. Gordon Brown Prime Minister of the UK (2007 - 2010)
Hon. Tony Blair Prime Minister of the UK (1997-2007)
Hon. Gerhard Schröder Chancellor of Germany (1998 – 2005)
Hon. Tony Abbott Prime Minister of Australia (2013 - 2015)
Hon. Naoto Kan Prime Minister of Japan (2010 - 2011)
Hon. Yasuo Fukuda Prime Minister of Japan (2007 - 2008)
Hon. Han Seung-soo Prime Minister of South Korea (2008 - 2009)
Hon. Máire Mhic Róibín President of Ireland (1990 - 1997)
Hon. José Manuel Barroso Prime Minister of Portugal (2002 - 2004)
Hon. José María Aznar Prime Minister of Spain (1996 - 2004)
Hon. Yves Leterme Prime Minister of Belgium (2009 - 2011)
Hon. Hans Göran Persson Prime Minister of Sweden (1996 - 2006)
Hon. Mario Monti Prime Minister of Italy (2011 - 2013)
Hon. Yukio Hatoyama Prime Minister of Japan (1993 - 2001)
Hon. Didier Reynders Deputy Prime Minister of Belgium (2004)
Hon. Vicente Fox Quesada President of Mexico (2000-2006)
Hon. Fredrik Reinfeldt Prime Minister of Sweden (2006-2014)
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