Mr. Sarin Chhak, whose real name is Khin Kaing, was born in the village of Krangsla, district of Prey Kabbas, province of Takeo. He was born on January 2, 1922 to Mr. Khin and Mrs. Chhay Lak who are farmers. During the French colonial period, because he was not able to attend school early on, when his parents decided to put him in school, due to his advanced age, he was not able to do so unless he changed his birth certificate. Thus, he was forced to adopt a new identity, under the new name of Sarin Chhak, in order to attend school. He studied law in Cambodia, and obtained his Doctoral Degree in Economic Law in France in 1966. For his doctoral degree thesis, he selected the “Cambodia’s Borders” issues as the topic of his research. To fulfill the requirement of his doctoral degree, he wrote his thesis (in French) which included the following four volumes: 1- The Khmer-Thai border, 2- The stabilization of the border. The collaboration between France and Thailand. 1902-1939, 3- The new questioning of the borders, and 4- The delineation of the Cambodian border with Laos and South Vietnam. Prior to March 18, 1970, Mr. Sarin Chhak acted as Ambassador of the Kingdom of Cambodia attached to Egypt. He was then stationed in Cairo. Following the removal from power of Prince Sihanouk, Mr. Sarin Chhak decided to follow the latter to Peking where he eventually became the Foreign Minister of the Royal Government of National Union of Cambodia (under the French acronym of GRUNC) under the leadership of Prince Sihanouk. Following the Khmer Rouge victory in 1975, Mr. Sarin Chhak, his wife, and a number of his children decided to return back to Cambodia. Since then not much information was available regarding his whereabouts. It was not until the end of 1978, when the Vietnamese forces invaded Cambodia and routed the Khmer Rouge regime out of Phnom Penh, that several people claimed to have seen him and his wife in Phnom Penh. Nevertheless, following the airlift of Prince Sihanouk from Phnom Penh prior to the arrival of the invading Vietnamese force, Mr. Sarin Chhak and his wife disappeared again. Finally, his family learned that he was captured by the occupying Vietnamese forces. Because of his involvement on border issues related to Vietnam, it appeared that after his capture, Mr. Sarin Chhak was imprisoned in Vietnam where he and his wife found their death.