2021-2022     Steven Simon, diplomat and policymaker, former NSC senior director

2019-2020     Hala Aldosari, Saudi scholar and activist in women’s rights in Arab societies

2018-2019     Admiral Scott H Swift, Former commander of the US Pacific Fleet

2017-2018     Judge James E Baker, Former chief judge of the US Court of Appeals for the Armed Forces

2016-2017     Lourdes Melgar, Mexico’s former deputy secretary of energy for hydrocarbons

October-November 2016     Mona Makram-Ebeid, a former member of parliament and senator in Egypt

2015-2016     Paul Heer, Former national intelligence officer for East Asia

February 2015     Shivshankar Menon, Former national security advisor of India

2014-2016     Joel Brenner, Former inspector general and senior counsel at the National Security Agency (NSA)

April 2014     Ranil Wickremesinghe, Former prime minister of Sri Lanka

2012-2020     Yukio Okamoto, Former special advisor to the prime minister of Japan

2011-2012     Abbas Maleki, Iran’s deputy foreign minister (1980-1997)

2011-2012     Hans-Georg Eichler, MD, Senior medical officer of European Medicines Agency

April 2011     Rt Hon David Miliband MP, Former foreign secretary for the United Kingdom from 2007 to 2010

2008-2009     Admiral William J Fallon, Former commander of US Central Command and US Pacific Command

2006-2007     Barbara Bodine, Career state department official and former US ambassador to Yemen

2006-2007     Francis Mading Deng, Former minister of Sudan, former deputy secretary general of the United Nations

2004-2005     Naomi Chazan, Former deputy speaker of the Knesset