- John Kerry, US Senator and Secretary of State[3]
- Dilma Rousseff, President of Brazil
- Jimmy Carter, President of the United States
- Boutros Boutros-Ghali, Secretary-General of the UN
- Julia Gillard, Prime Minister of Australia
- Mikhail Gorbachev, President of the Soviet Union
- Joseph Stiglitz, Nobel Prize-winning economist
- Gro Harlem Brundtland, Prime Minister of Norway
- Mangosuthu Buthelezi, South African politician
- Pierre Buyoya, President of Burundi
- Fernando Henrique Cardoso, President of Brazil
- Noam Chomsky, American linguist and political activist
- John Danforth, US Senator and Ambassador to the UN
- Richard Florida, Professor at the University of Toronto
- Jeffrey Sachs, University Professor at Columbia University
- Richard Epstein, Professor at the University of Chicago
- Lawrence Freedman, Advisor to Tony Blair
- Valéry Giscard d'Estaing, President of France
- Alexander Haig, US Secretary of State
- Václav Havel, President of the Czech Republic
- Richard Holbrooke, US Ambassador to the United Nations
- John McCain, US Senator
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- Ricardo Lagos, President of Chile
- Madeleine Albright, US Secretary of State
- Ali Akbar Velayati, Iranian politician
- Rashid Khalidi, Professor at Columbia University
- Romano Prodi, President of the European Commission
- Samantha Power, US Ambassador to the United Nations
- Michael McFaul, Professor at Stanford University
- Ira Magaziner, Chairman of the Clinton Foundation
- Robert McNamara, US Secretary of Defense
- Joseph Nye, Professor at Harvard University
- Sadako Ogata, UN High Commissioner for Refugees
- Christopher Patten, Last Governor of Hong Kong
- Shimon Peres, President and Prime Minister of Israel
- Javier Solana, Secretary General of NATO
- Larry Diamond, Professor at Stanford University
- Paul Wolfowitz, President of the World Bank
- Fareed Zakaria, journalist and host of Fareed Zakaria G.P.S.
- Robert Jervis, Professor at Columbia University
- Gennady Zyuganov, Russian politician
- R. Nicholas Burns, Professor at Harvard University
- Vicente Fox, President of Mexico
- Jerzy Buzek, President of European Parliament
- Nathan Law, Hong Kong Activist and Legislator
- Egils Levits, President of Latvia
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