Richard Burton ( Richard Burton )

Leon Trotsky

Alain Delon ( Alain Delon )

Frank Jackson

Romy Schneider ( Romy Schneider )

Gita Samuels

Valentina Cortese ( Valentina Cortese )

Natalia Trotsky

Duilio Del Prete ( Duilio Del Prete )

Felipe

Enrico Maria Salerno ( Enrico Maria Salerno )

Salazar

Luigi Vannucchi ( Luigi Vannucchi )

Ruiz

Jean Desailly ( Jean Desailly )

Alfred Rosmer

Simone Valère ( Simone Valère )

Marguerite Rosmer

Peter Chatel ( Peter Chatel )

Otto

Giorgio Albertazzi ( Giorgio Albertazzi )

Carlos Miranda ( Carlos Miranda )

Sheldon Harte

Claudio Brook ( Claudio Brook )

Roberto (uncredited)