J.K. Simmons George Shultz
Hope Davis Nancy Reagan
Jared Harris Mikhail Gorbachev
Jeff Daniels Ronald Reagan
Branka Katić Raisa Gorbachev
Jóhannes Haukur Jóhannesson Richard Perle
Guy Burnet Alexander
Aya Cash Cleo
John Ross Bowie Ken Adelman
Adrian Rawlins Max Rampleman
Michael Russell Gunn Writer, Director, Producer
Vladimir Kulich Sergey Akhromeyev
Tim Dutton Edward Shevardnadze
Catherine Burdon Margaret Clancy
Einar Haraldsson USSR Negotiating Team (uncredited)
Magdalena Górka Director of Photography
Ivana Primorac Hair Designer, Makeup Designer
Ari Freyr Isfeld Oskarsson KGB Officer
Joi Johannsson KGB Colonel
Austin Wintory Original Music Composer
Jón Jónsson TV Reporter (uncredited)
Kristín Lea Sigríðardóttir Soviet Attaché
John Logan Pierson Producer
Christopher Hammond Producer
Jóel Sæmundsson CIA Officer
Stephen Brennan Paul Nitze
Laura Steiger Editor
Michael L. Sale Editor
Sara Rut Arnardóttir Ronald Regan Assistant (uncredited)
Stefán Þór Þorgeirsson Shultz Staffer (uncredited)
Tommi Thor Gudmundsson US Notetaker (uncredited)
Hjörtur Jóhann Jónsson Major Alexei Ivanov
Tristan Roche Samantha Lightning - WH Staffer
Alexander Briem Journalist (uncredited)
Ebba Guðný Guðmundsdóttir Protocol Officer (uncredited)
Dagur Þór Óskarsson Stand In (uncredited)
Brynja Anderiman Horse Rider
Axel Ólafsson KGB Notetaker (uncredited)
Sigurdur Jefferson Colonel Tim Schilling
Jafet Máni Magnúsarson Gorbachev KGB (uncredited)