Nuon Chea (; born Lao Kim Lorn; 7 July 1926 – 4 August 2019), also known as Long Bunruot () or Rungloet Laodi ( ), was a Cambodian communist politician and revolutionary who was the chief ideologist of the Khmer Rouge. He also briefly served as acting Prime Minister of Democratic Kampuchea. He was commonly known as "Brother Number Two" (), as he was second-in-command to Khmer Rouge leader Pol Pot, General Secretary of the Party, during the Cambodian genocide of 1975–1979. In 2014, Nuon Chea received a life sentence for crimes against humanity, alongside another top-tier Khmer Rouge leader, Khieu Samphan, and a further trial convicted him of genocide in 2018. These life sentences were merged into a single life sentence by the Trial Chamber on 16 November 2018. He died while serving his sentence in 2019. Early life Nuon Chea was born as Lao Kim Lorn at Voat Kor, Battambang on 7 July 1926. Nuon's father, Lao Liv, worked as a trader as well as a corn farmer, while his mother, Dos Peanh, was a tailor. An interview by a Japanese researcher in 2003 with Nuon Chea quoted that Liv was Chinese, while Peanh was the daughter of a Chinese immigrant from Shantou and his Khmer wife. In 2011, however, Chea told the Khmer Rouge Tribunal that he was only a quarter Chinese through his half-Chinese father. As a child, Nuon Chea was raised in both Chinese and Khmer customs. The family prayed at a Theravada Buddhist temple, but observed Chinese religious customs during the Lunar New Year and Qingming festival. Nuon Chea started school at seven, and was educated in Thai, French and Khmer. In the 1940s, Nuon Chea studied at Wat Benchamabophit School and Faculty of Law, Thammasat University in Bangkok and worked part-time for the Thai Ministry of Foreign Affairs. He began his political activities in the Communist Party of Siam in Bangkok. He was elected Deputy General Secretary of the Workers Party of Kampuchea (later renamed as the Communist Party of Kampuchea) in September 1960. In Democratic Kampuchea, he was generally known as "Brother Number Two." Unlike most of the leaders of the Khmer Rouge, Chea was not educated in France. As documented in the Soviet archives, Nuon Chea played a major role in negotiating the North Vietnamese invasion of Cambodia in 1970, with the intent of forcing the collapse of Lon Nol's government: