President Ho Chi Minh visited Lenin Mausoleum on July 16, 1957. (Source: Russian Journalists Association)

President Ho Chi Minh visits the Rang Dong (Dawn) battleship in Leningrad, August 1957. (Photo: VNA)

President Ho Chi Minh took souvenir photos with Soviet Union Navy soldiers while visiting Leningrad City in August 1957 (Source: Russian Journalists Association)

Uncle Ho with children in the Soviet Union (August 1957) (Source: hochiminh.vn)

President Ho Chi Minh on Lake Iasuc, Soviet Union (1959). (Source: hochiminh.vn)

President Ho Chi Minh with officials and children at a hydroelectric power plant in Armenia, during a visit in the Soviet Union, July 22, 1959. (Source: Archives of the Ministry of Foreign Affairs)

President Ho Chi Minh visited the summer camp of children of food industry workers in Armenia (the Soviet Union), July 22, 1959. (Source: Archives of the Ministry of Foreign Affairs)

President Ho Chi Minh with children at a children's summer camp in the Soviet Republic of Turmania (the Soviet Union), 1959. (Source: Archives of the Ministry of Foreign Affairs)

President Ho Chi Minh signed a joint statement at the 81st Conference of the International Communist and Workers' Parties in Moscow (November 1960) (Source: hochiminh.vn)

President Ho Chi Minh received a delegation of the Party and Government of the Soviet Union led by the Chairman of the Council of Ministers of the Soviet Union A.N. Kosygi to visit Vietnam, at the Presidential Palace, February 6, 1965. (Source: Ho Chi Minh Museum)

President Ho Chi Minh received a delegation of the Party and Government of the Soviet Union led by the Chairman of the Council of Ministers of the USSR A.N. Kosygi to visit Vietnam, at the Presidential Palace, February 6, 1965. (Source: Ho Chi Minh Museum)

CPV