Hun Sen

Samdech Hun Sen is a Cambodian politician and former military commander who served as the prime minister of Cambodia from 1985 to 2023. He is the longest-serving head of government in Cambodia's history, and one of the longest-serving leaders in the world. He is the president of the Cambodian People's Party (CPP), which has governed Cambodia since 1979, and a member of the National Assembly for Kandal. His full honorary title is Samdech Akka Moha Sena Padei Techo Hun Sen (Khmer: សម្តេច អគ្គមហាសេនាបតី តេជោ ហ៊ុន សែន, UNGEGN: Sâmdéch Âkkô Môha Sénéa Bâtei Téchoŭ Hŭn Sên [sɑmɗac ʔakkeaʔ mɔhaː senaː paɗəj tecoː hun saen]; meaning "Lord Prime Minister and Supreme Military Commander Hun Sen"). 

Born Hun Bunal, he changed his name to Hun Sen in 1972, two years after joining the Khmer Rouge as a soldier. He fought for the Khmer Rouge in the Cambodian Civil War and was a Battalion Commander in Democratic Kampuchea until defecting in 1977 and fighting alongside Vietnamese forces in the Cambodian–Vietnamese War. From 1979 to 1986 and again from 1987 to 1990, he served as Cambodia's foreign minister in the Vietnamese occupied government. At age 26, he was also the world's youngest foreign minister. 

Hun Sen rose to the premiership in January 1985 when the one-party National Assembly appointed him to succeed Chan Sy, who had died in office in December 1984. He held the position until the 1993 UN-backed elections which resulted in a hung parliament, with opposition party FUNCINPEC winning the majority of votes. Hun Sen refused to accept the result. After negotiations with FUNCINPEC, Norodom Ranariddh and Hun Sen agreed to simultaneously serve as First and Second Prime Minister, until the coalition broke down and Sen orchestrated a coup d'état in 1997 which toppled Ranariddh. Since 1998, Hun Sen has led the CPP to consecutive and often contentious election victories, overseeing rapid economic growth and development, but also corruption, deforestation and human rights violations.In 2013, Hun Sen and the CPP were reelected with a significantly reduced majority. Allegations of voter fraud led to widespread anti-government protests. In 2018, he was elected to a sixth term in a largely unopposed poll after the dissolution of the opposition party, with the CPP winning every seat in the National Assembly. He is currently serving in his sixth term as prime minister in de facto one-party rule.

Hun Sen has been prominent in communist, Marxist–Leninist and now state capitalist and national conservative political parties, and although Khmer nationalism has been a consistent trait of all of them, he is thought to lack a core political ideology. In foreign policy, Sen has in recent years strengthened a close diplomatic and economic alliance with China, which has undertaken large-scale infrastructure projects and investments in Cambodia under the Belt and Road Initiative. Meanwhile, Sen has frequently criticized Western powers in response to their sanctions on Cambodia over human rights issues and has overseen a number of diplomatic disputes with neighboring Thailand.

He has been described as a "wily operator who destroys his political opponents" by The Sydney Morning Herald and as a dictator who has assumed highly centralized power in Cambodia and considerable personal wealth using violence and corruption, including a personal guard said to rival the country's regular army. 

On 26 July 2023, three days after the 2023 election, Hun Sen formally announced his resignation as prime minister following an audience with the King, with his son Hun Manet as his successor. He will remain as party president and member of parliament, and will be appointed as President of the Supreme Privy Council to the King as well as President of the Senate after the 2024 Senate elections.

Prime Minister of Cambodia (1998–2023) :

In the 1998 election, he led the CPP to victory and forming a coalition with FUNCINPEC.

The 2003 Phnom Penh riots resulted in the ransacking of the Thai embassy in Cambodia, following false allegations that a Thai soap opera actress Suvanant Punnakant claimed that Angkor Wat belonged to Thailand. Sen called for a boycott of Thai goods and television shows and criticized the actress shortly before the riots. The riots and Sen's response severely damaged Cambodia–Thailand relations. Sen's Thai counterpart Thaksin Shinawatra closed the borders, expelled the Cambodian ambassador and evacuated Thai citizens from Phnom Penh in response. Thaksin also sent a warning to Hun Sen after witness reports suggested the army and police had not intervened until the embassy was destroyed. Sam Rainsy accused Sen of inciting the riot. 

The elections of July 2003 resulted in a larger majority in the National Assembly for the CPP, with FUNCINPEC losing seats to the CPP and the Sam Rainsy Party. However, the CPP's majority was short of the two thirds constitutionally required for the CPP to form a government alone. This deadlock was overcome when a new CPP-FUNCINPEC coalition was formed in mid-2004, with Norodom Ranariddh chosen to be head of the National Assembly and Hun Sen again becoming sole Prime Minister.

From 2008 to 2013, the Cambodian–Thai border dispute was an ongoing conflict, which on a number of occasions led to fighting between Cambodian and Thai forces. Sen and Thai premier Abhisit Vejjajiva negotiated a de-escalation on several occasions with the encouragement of ASEAN. Cambodia was granted sovereignty over the Preah Vihear Temple area by a UN court in 2013, ending the dispute.

Sen has opposed extensive investigations and prosecutions related to crimes committed by former Khmer Rouge leaders by the UN-backed Khmer Rouge Tribunal.

On 6 May 2013, Hun Sen declared his intention to rule Cambodia until the age of 74.