John Nesbitt

Narrator (voice)

Edward R. Stettinius Jr.

Himself, the U.S. Secretary of State

Jonathan Hale

(uncredited)

Martin Kosleck

Delegate of Nation X (uncredited)

Miles Mander

(uncredited)

Grant Mitchell

(uncredited)

Lionel Stander

(uncredited)

George Zucco

(uncredited)