Nuon Chea, also known as Long Bunruot or Rungloet Laodi, was a Cambodian 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" (បងធំទី២), 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. Nuon Chea was a proponent of what he called "Dialectical Materialist Buddhism".
