Nuon Chea, Cambodian politician and theorist for the Khmer Rouge (born 1926)

Nuon Chea, 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.

Democratic Kampuchea was the official name of the Cambodian state from 1976 to 1979, under the government of Pol Pot and the Communist Party of Kampuchea (CPK), commonly known as the Khmer Rouge. The Khmer Rouge's capture of the capital Phnom Penh in 1975 effectively ended the United States-backed Khmer Republic of Lon Nol.

Khmer Rouge is the name that was popularly given to members of the Communist Party of Kampuchea (CPK), and by extension to Democratic Kampuchea, which ruled the country between 1975 and 1979. The name was coined in the 1960s by Norodom Sihanouk to describe his country's heterogeneous, communist-led dissidents, with whom he allied after the 1970 Cambodian coup d'état.

August 4 is the 216th day of the year in the Gregorian calendar; 149 days remain until the end of the year.