March 1 — a border conflict between the USSR and China on the Ussuri River.
March 2 — a clash occurred between Soviet border guards and Chinese troops on Damansky Island, which belonged to the USSR. Thirty Soviet border guards were killed. After this, Soviet forces carried out a massive air and artillery strike that virtually wiped the island off the face of the earth.
September 11 — an unexpected visit by USSR Chairman of the Council of Ministers Kosygin to Beijing.