Along with Tou Samouth, Son founded the Kampuchean People's Revolutionary Party (KPRP) in 1951. After the Geneva Agreements and the end of the First Indochina war, he and many Khmer Issarak officials left Cambodia for North Vietnam.
Son, along with Tou Samouth, founded the Kampuchean People's Revolutionary Party (KPRP) in 1951. After the Geneva Agreements and the end of the First Indochina war, he and many Khmer Issarak officials left Cambodia for North Vietnam.