Question: What film by the director of "You and I" is about the Khmer Rouge?

Context paragraphs:
Operation Eagle Pull: Operation Eagle Pull was the United States military evacuation by air of Phnom Penh, Cambodia, on 12 April 1975.  At the beginning of April 1975, Phnom Penh, one of the last remaining strongholds of the Khmer Republic, was surrounded by the Khmer Rouge and totally dependent on aerial resupply through Pochentong Airport.  With a Khmer Rouge victory imminent, the US government made contingency plans for the evacuation of US nationals and allied Cambodians by helicopter to ships in the Gulf of Thailand.  Operation Eagle Pull took place on the morning of 12 April 1975 and was a tactical success carried out without any loss of life.  Five days later the Khmer Republic collapsed and the Khmer Rouge occupied Phnom Penh.

Prasat Ta Muen Thom: Prasat Ta Muen Thom (Thai: ปราสาทตาเมือนธม , rtgs: "Prasat Ta Muean Thom" ,  ] ; Khmer: ប្រាសាទតាមាន់ធំ ) is a Khmer temple located in Thailand's Surin Province, a few dozen meters from the border with Cambodia's Oddar Meanchey Province.  Its Khmer name translates literally to "Great Temple of Grandfather Chicken".  It lies not far from two related temples in a densely forested area where access is difficult on one of the passes through the Dangrek Mountains.  Prasat Ta Muen Toch ("Minor Temple of Grandfather Chicken"), the hospital chapel, lies two and half kilometers to the northwest and just 300 meters beyond that is the rest house chapel, Prasat Ta Muen ("Temple of Grandfather Chicken").  During the 1980s-90s, when the Khmer Rouge controlled the area, the temples in the region were looted by the Khmer Rouge to finance their guerrilla campaign.  Many architectural pieces and original sculptures were stolen, sometimes detached using dynamite, and smuggled out of Cambodia or sold on the black market.  These three temples, all within a few hundred meters of each other, formed a complex which was an important stop on a major route of the Khmer Empire, the Ancient Khmer Highway from its capital at Angkor to its major administrative center in the northwest, Phimai (now in Thailand).

Kang Kek Iew: Kang Kek Iew or Kaing Kek Iev, also romanized as Kaing Guek Eav ( ; Khmer: កាំង ហ្គេកអ៊ាវ ), "nom de guerre" Comrade Duch or Deuch (មិត្តឌុច); or Hang Pin, (born 17 November 1942) is a prisoner, war criminal and former leader in the Khmer Rouge movement, which ruled Democratic Kampuchea from 1975 to 1979.  As the head of the government's internal security branch, he oversaw the Tuol Sleng (S-21) prison camp where thousands were held for interrogation and torture.  He was the first Khmer Rouge leader to be tried by the Extraordinary Chambers in the Courts of Cambodia for the crimes of the regime, and was convicted of crimes against humanity, murder, and torture for his role during the Khmer Rouge rule of Cambodia and sentenced to 30 years' imprisonment.  On 2 February 2012, his sentence was extended to life imprisonment by the Extraordinary Chambers in the Courts of Cambodia.

S-21: The Khmer Rouge Killing Machine: S-21: The Khmer Rouge Killing Machine (French: "S-21, la machine de mort Khmère rouge" ) is a 2003 documentary film directed by Rithy Panh.  Rithy, himself a survivor of the Khmer Rouge, brought together two former prisoners of the regime with their former captors at Tuol Sleng Genocide Museum, the former Security Prison 21 (S-21) under the Khmer Rouge.

The Killing Fields (film): The Killing Fields is a 1984 British biographical drama film about the Khmer Rouge regime in Cambodia, which is based on the experiences of two journalists: Cambodian Dith Pran and American Sydney Schanberg.  It was directed by Roland Joffé and produced by David Puttnam for his company Goldcrest Films.  Sam Waterston stars as Schanberg, Haing S. Ngor as Pran, Julian Sands as Jon Swain, and John Malkovich as Al Rockoff.  The adaptation for the screen was written by Bruce Robinson; the musical score was written by Mike Oldfield and orchestrated by David Bedford.

Song of the Khmer Republic: The Song of the Khmer Republic (Khmer: បទចំរៀងនៃសាធារណរដ្ឋខ្មែរ , "Bâtchamrieng ney Sathéaranakrâth Khmer") was the national anthem of Khmer Republic from 1970 to 1975.  The song is often attributed to groups of students, led by Hang Thun Hak, at the Royal University of Fine Arts in Phenom Penh, but academic sources say it was written and composed by the Buddhist monk activist Khieu Chum, a student of Hem Chieu.  The song was adopted as the national anthem of the newly founded Khmer Republic on 9 October 1970 after the overthrow of the monarchy.  After the end of the Republic due to the Khmer Rouge victory in 1975, the song ceased to be the national anthem and was officially replaced in 1976 by the Khmer Rouge anthem "Victorious 17th of April".

Ieng Thirith: Ieng Thirith (née Khieu; Khmer: អៀង ធីរិទ្ធ ; 10 March 1932 – 22 August 2015) was an influential figure in the Khmer Rouge, although she was neither a member of the Khmer Rouge Standing Committee nor of the Central Committee.  Ieng Thirith was the wife of Ieng Sary, who was Minister of Foreign Affairs of Democratic Kampuchea's Khmer Rouge regime.  She served as Minister of Social Affairs from October 1975 until the fall of the Khmer Rouge in 1979.

Democratic Kampuchea: Kampuchea (Khmer: កម្ពុជា, "Kâmpŭchéa"), officially known as Democratic Kampuchea (Khmer: កម្ពុជាប្រជាធិបតេយ្យ, "Kâmpŭchéa Prâcheathippadey") (DK) from 5 January 1976, was the name of the Khmer Rouge (KR)-controlled state that, between 1975 and 1979, existed in present-day Cambodia.  It was founded when the Khmer Rouge forces defeated the Khmer Republic of Lon Nol in 1975.  During its rule between 1975 and 1979, the state and its ruling Khmer Rouge regime was responsible for the deaths of millions of Cambodians through forced labour and genocide.  After losing control of most of Cambodian territory to Vietnamese occupation, it survived as a rump state supported by China.  In June 1982, the Khmer Rouge formed the Coalition Government of Democratic Kampuchea with two non-communist guerilla factions, which retained international recognition.  The state was renamed Cambodia in 1990 in the run up to the UN-sponsored Paris Peace Agreement conference of 1991.

Khmer Rouge: The Khmer Rouge ( , ] , "Red Khmers"; Khmer: ខ្មែរក្រហម "Khmer Kror-Horm") was the name given to the followers of the Communist Party of Kampuchea in Cambodia.  It was formed in 1968 as an offshoot of the Vietnam People's Army from North Vietnam, and allied with North Vietnam, the Viet Cong, and the Pathet Lao during the Vietnam War against the anti-communist forces from 1968 to 1975.  The Khmer Rouge emerged victorious in the Cambodian Civil War, overthrew the military dictatorship of the Khmer Republic and installed their own government Democratic Kampuchea in 1975, led by Pol Pot, Nuon Chea, Ieng Sary, Son Sen, and Khieu Samphan.  This was followed by the Cambodian genocide which occurred from 1975 until 1979, when the Khmer Rouge was finally removed from power by Vietnam in the Cambodian–Vietnamese War.  The military power of the Khmer Rouge organization was not broken however, and a long era of guerrilla warfare involving large swaths of the Cambodian countryside began.  Many different military factions were involved in the guerrilla war era and it ended around 1994.

You and I (2011 film): You and I (Russian: Ты и я ; also known by its working title, Finding t.A.T.u.) is a 2011 drama-film directed by Roland Joffé, an English-French film director who is known for his Oscar nominated movies "The Killing Fields" and "The Mission", depicting a fictionalised version of real events adapted from the novel "t.A.T.u. Come Back".  The film features Mischa Barton, Anton Yelchin, Charlie Creed-Miles, Helena Mattsson, Alexander Kaluzhsky, Bronson Pinchot and Shantel VanSanten.  The film is about a teenage girl, Lana, who moves from a rural town in Russia to Moscow, completely unaware that meeting an internet girlfriend, Janie, will result in a string of adventures.

Supporting paragraphs: You and I (2011 film) The Killing Fields (film)
Answer: The Killing Fields