Question: Are Stanley Kramer and Hubert Sauper of the same nationality?

Context articles: Stanley Kramer
Rudolph Sternad
We Come as Friends
Oklahoma Crude (film)
George Glass
Karen Sharpe
Hubert Sauper
A Mad World, My Masters
The Runner Stumbles
Darwin's Nightmare

Stanley Earl Kramer (September 29, 1913February 19, 2001) was an American film director and producer, responsible for making many of Hollywood's most famous "message films".
 As an independent producer and director, he brought attention to topical social issues that most studios avoided.
 Among the subjects covered in his films were racism (in "The Defiant Ones" and "Guess Who's Coming to Dinner"), nuclear war (in "On the Beach"), greed (in "It's a Mad, Mad, Mad, Mad World"), creationism vs. evolution (in "Inherit the Wind") and the causes and effects of fascism (in "Judgment at Nuremberg").
 His other notable films included "High Noon" (1952, as producer), "The Caine Mutiny" (1954, as producer), and "Ship of Fools" (1965).
Rudolph Sternad (October 6, 1906 – April 23, 1963) was an American art director and production designer.
 He was nominated for three Academy Awards in the category Best Art Direction.
 He was a frequent collaborator of producer-director Stanley Kramer, working with him on virtually all of the films that Kramer directed, and many famous ones that he only produced, such as "High Noon", "Cyrano de Bergerac", and "The Men".
We Come as Friends is a 2014 Austrian-French documentary film written, directed and produced by Hubert Sauper.
 The film premiered in-competition in the "World Cinema Documentary Competition" at 2014 Sundance Film Festival on January 18, 2014.
 It won the "Special Jury Award for Cinematic Bravery" at the festival.
Oklahoma Crude is a 1973 American drama Metrocolor film directed by Stanley Kramer in Panavision.
 It stars George C. Scott and Faye Dunaway.
 It was entered into the 8th Moscow International Film Festival where Kramer won the Golden Prize for Direction.
 The song "Send a Little Love My Way", sung by Anne Murray, was featured in the film and was nominated for a Golden Globe Award for Best Original Song in 1973.
George Glass (August 19, 1910 – April 1, 1984) was an American film producer and publicist, best known for his work with Stanley Kramer.
 In Kramer's 1997 autobiography, describing how he formed his first production company in the late 1940s, he called Glass "one of the best publicity men in town", and remarked "I was fortunate to get Glass, with whom I had worked in the Lewin-Loew partnership before the war.
 He was a bright man and a very smooth operator."
 In a 1973 biography of Marlon Brando, Bob Thomas wrote:
Karen Sharpe (born September 20, 1934) is an American former actress of film and television, who appeared on screen from 1952 to 1966.
 She is the surviving third wife of producer/director Stanley Kramer, to whom she was married from 1966 until his death in 2001.
 She has since been the caretaker of the Kramer estate and legacy.
Hubert Sauper (born 27 July 1966) is an Austrian documentary filmmaker, director, writer, producer, and actor best known for the highly controversial "Darwin's Nightmare" (2004) which was nominated for an Academy Award.
A Mad World, My Masters is a Jacobean stage play written by Thomas Middleton, a comedy first performed around 1605 and first published in 1608.
 The title is proverbial, and was used by a pamphleteer, Nicholas Breton, in 1603.
 The title later became the basis for the title of Stanley Kramer's 1963 film, "It's a Mad, Mad, Mad, Mad World".
The Runner Stumbles is a 1979 film directed and produced by Stanley Kramer, based on the Broadway play by Milan Stitt.
 The film was the last of Kramer's long and distinguished career.
 It stars Dick Van Dyke, Kathleen Quinlan, Maureen Stapleton, Tammy Grimes, Beau Bridges, and Ray Bolger.
Darwin's Nightmare is a 2004 Austrian-French-Belgian documentary film written and directed by Hubert Sauper, dealing with the environmental and social effects of the fishing industry around Lake Victoria in Tanzania.
 It premiered at the 2004 Venice Film Festival, and was nominated for the 2006 Academy Award for Documentary Feature at the 78th Academy Awards.
 The Boston Globe called it "the year's best documentary about the animal world."