jan 1, 1969 - Sino-Soviet border conflict

Description:

a seven-month undeclared military conflict between the Soviet Union and China at the height of the Sino-Soviet split in 1969. Although military clashes ceased that year, the underlying issues were not resolved until the 1991 Sino-Soviet Border Agreement.

The most serious of these border clashes, which brought the two communist-led countries to the brink of war, occurred in March 1969 in the vicinity of Zhenbao (Damansky) Island on the Ussuri (Wusuli) River; as such, Chinese historians most commonly refer to the conflict as the Zhenbao Island Incident.

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