Cliff Robertson

David Frazer

Jack Hawkins

Colonel Drexel

Marisa Mell

Sophie

Michel Piccoli

Georges Sarrassin

Bill Fraser

Leslie Dunwoody

Charles Gray

Benson

John Le Mesurier

Sir Robert

Felix Aylmer

Henrickson

Christopher Witty

Prince Jamil

Tutte Lemkow

Paviot

Ernest Clark

Minister

Keith Pyott

Gustave

Jose Burgos

El Mono

James Payne

Russian Officer in Tent (uncredited)

Jerold Wells

Brindle (uncredited)

George Roderick

Officer at Circus (uncredited)