Former British Prime ministers

David William Donald Cameron

Former Prime Ministers of Japan

Yukio Hatoyama

He served as U.S. Treasury Secretary, president of Harvard University, and director of the National Economic Council

Lawrence Henry Summers

Investor, entrepreneur, philanthropist

Warren E. Buffett

Former United States presidents

William Jefferson Clinton

Former Principal Vice-Chancellor of Cambridge University

Ian White

Winner of "Sun Yefang Economic Science Award", a high award in Chinese economics

Xu Xiaonian

Former Prime Minister of Australia and leader of the Communist Party

Kevin Michael Rudd

a famous diplomat, has worked in the Secretariat of the United Nations Headquarters in New York and the Permanent Mission of China to the United Nations,

Zhang Qiyue

"Prophet of the Internet", "Father of the Silicon Valley spirit", founding editor of Wired magazine

Kevin Kelly

Vice-chancellor, University of Cambridge, UK

Andy Neely

German politician, member of the Social Democratic Party of Germany, Chancellor of Germany

Olaf Scholz