John Varley

Barney Pityana

Rory Stewart

Nick Clegg

Iraq's Vice-President

Keith Ellison

Carne Ross

Derek Wall

Abdullah Dardari

David Lammy

Lotfi Raissi

Ayaan Hirsi Ali

Stephen Rapp

Alon Liel

Freshta Raper

Keith Mann

Amre Moussa

Episode 19

Lord Adebowale

Professor Richard Dawkins

Episode 22

Episode 23

Episode 24

Alastair Campbell

Greg Dyke

Achim Steiner

Alec Erwin

Alexander Lebedev

Alexandra Shulman

Anders Dahlvig

Anthony Loyd

Anwar Ibrahim

Arthur Edwards

Avi Arad

Bishop Kevin Dowling

Boris Berezovsky

Carren and Ron Clem

Charles Clarke

Charles Nqakula

Chris Patten

David Satterfield

Decima Francis

Eric Edelman

Farouq Al-Sharaa

Gary Kasparov

George Galloway

Ghazi Hamad

Hassan Wirajuda

Helen Zille

Isaac Herzog

Ishmael Beah

Iyad Allawi

Jack Lang

James Rogers

Janet Napolit

Jasvinder Sanghera

Jay Garner

Johnathan Bennett

Lee Smolin

Lord Chris Patten and John Bolton

Marina Litvinenko and Alex Goldfarb

Mark Dybul

Martha Karua

Michael Eavis

Mikheil Saakashvili

Moazzam Begg

Morgan Tsvangirai

Nicholas Burns

Nuhu Ribadu

Orji Kalu

Paul Deighton

Paul Skinner

Pernando Barrena

Pierre Lellouche

Prof. Margaret Stanley

Reg Keys

Richard Lugar

Roberta Combs

Rohitha Bogollagama

Saeb Erekat

Senator Jeff Bingaman

Senator Radoslaw Sikorski

Sharon Looremeta

Sir Paul Nurse

Tareq al-Hashemi

Tony Benn MP and Lord Tebbit

Victoria Nuland

Yasser Abed Rabbo

Yisrael Medad

Yvo de Boer