Question: Who was the director of the 1968 Metrocolor Cold War era suspense and espionage film that had its screenplay written by the novelist who wrote under the pseudonym Ian Stuart?

Related documents: [0]  [DOC] Alistair Stuart MacLean (Scottish Gaelic: "Alasdair MacGill-Eain" ; 21 April 1922 – 2 February 1987) was a Scottish novelist who wrote popular thrillers and adventure stories. His works include "The Guns of Navarone", "Ice Station Zebra" and "Where Eagles Dare" – all three were made into popular films. He also wrote two novels under the pseudonym Ian Stuart. [END] 
[1]  [DOC] Ice Station Zebra is a 1968 Metrocolor Cold War era suspense and espionage film directed by John Sturges, starring Rock Hudson, Patrick McGoohan, Ernest Borgnine, and Jim Brown. The screenplay by Alistair MacLean, Douglas Heyes, Harry Julian Fink, and W. R. Burnett is loosely based upon MacLean's 1963 novel of the same name. Both have parallels to real-life events that took place in 1959. The film was photographed in Super Panavision 70 by Daniel L. Fapp, and presented in 70 mm Cinerama in premiere engagements. The original music score is by Michel Legrand. [END]  
Answer: John Sturges
John Sturges