In 1988 a classified Vietnamese Ministry of Public Security’s in-house professional journal published this article offering ideas on how to utilize the “psychological characteristics” of the ethnic Chinese in the interrogation of suspected “Chinese spies”.  At the time the article was published, the once-close alliance between the Vietnamese and Chinese Communist Parties, which Mao Zedong described in 1967 as being “as close as between lips and teeth”, had deteriorated into a vicious military and political conflict between the two former allies.  Chinese efforts to collect intelligence on and to foment internal opposition against the leadership of the Vietnamese Communist Party were of special concern to Vietnam’s security service, and ethnic Chinese residents of Vietnam naturally became a primary focus of Vietnam’s counter-espionage efforts.

The Vietnamese Permanent Representative to the UN submits an excerpt from a record of conversation between Pol Pot and Hua Guofeng, dated September 29, 1977.

A report on the Sino-Vietnamese Conflict, outlining the military forces on both sides and a description of combat operations from 17 February to 8 March.

Zhou Enlai meets with the head of a Vietcong delegation, Nguyen Van Hieu. The two discuss the Vietcong's struggle inside of Vietnam and the organization's international ties, as well as disarmament and Afro-Asian politics.

Deng and Tanaka discuss Korea, Vietnam, Cambodia, and ASEAN, among other subjects.

Huang Hua and Sonoda discuss Vietnam, Cambodia, and Korea.

Deng and Ohira discuss China and Japan's relations with Pakistan, Vietnam, Cambodia, and the U.S.

Deng and Ohira discuss developments in Indochina and on the Korean Peninsula, as well as relations with the United States.

Deng Xiaoping and Fukuda Takeo discuss Sino-Japanese relations, the Soviet Union, Vietnam, and Soviet-American negotiations over nuclear weapons.