Sergei Ryabkov: Russia and energy security

Adela Raz, Afghanistan's Ambassador to the US

Philippe Sands: Is international justice working?

Henry Marsh: A doctor arguing for assisted dying

Andrew Forrest: Mega-polluter turned climate revolutionary

David Baddiel, Comedian and writer

Ariel Dorfman: Ghosts of the past

Bruno Le Maire: Is France looking for a new economic direction?

Fatih Birol: Can greenhouse gas emissions be eliminated?

Fiona Hill: What did Trump mean for America and the world?

Prime Minister Albin Kurti: Is he a source of instability in the Balkans?

Mike Leigh: Art and the cinema

Patrice Evra: The flaws in football

Pawel Jablonski: Could Poland exit the EU?

Ritchie Torres: Is America ready to embrace progressive politics?

George Takei: Growing up in an internment camp

Ryan Girdusky: Race and education in America

Péter Márki-Zay: Can Viktor Orban be beaten at the ballot box?

Rana Ayyub: Abuse, intimidation and legal threats

Nicolai Tangen: Can Norway move on from fossil fuels?

Ken Buck: Big tech and Republican politics

Paul Auster: 'We are divided in ways we have never seen before'

Moeed Yusuf: What will a Taliban-controlled Afghanistan mean for Pakistan?

John Kerry: US Special Envoy for Climate

Maria Ressa and Dmitry Muratov: Fighting for a free press

Ernesto Araújo: Has Brazil failed to protect its people?

Neil deGrasse Tyson: Trust in science

Laurence Tribe: Is the US system of government in peril?

Nureldin Satti: Sudan's coup

Bryan Stevenson: Will equality ever be more than a dream in the US?

Sathnam Sanghera: Confronting Britain's history