During the open door policy.
No. The United States had full diplomatic relations with the Republic of Vietnam (colloquially called South Vietnam) from 1954-1975 when that country was conquered by the Socialist Republic of Vietnam (colloquially called North Vietnam or just Vietnam today) in 1975 at the close of the Vietnam War (the Vietnamese call it the American War). The United States established full diplomatic relations with the Socialist Republic of Vietnam in 1995 as Vietnam embraced a market economy and was beginning to reach out to other ASEAN nations.
Diplomatic Passport - 1954 is rated/received certificates of: UK:U
Intimate Relations - 1954 is rated/received certificates of: USA:Approved
Vladimir Petrov was a Soviet spy in Australia who defected in exchange for political asylum in 1954. The Australian government responded by recalling the USSR embassy in Canberra and cutting off diplomatic relations with Moscow.
1954
Air China was created in 1954.
1954
The New Adventures of China Smith - 1954 Ferry to Kowloon was released on: USA: 1954
The New Adventures of China Smith - 1954 The Emperor's Teapot was released on: USA: 1954
The New Adventures of China Smith - 1954 A Bandit of Malaya was released on: USA: 1954
The New Adventures of China Smith - 1954 The Talons of Tongking was released on: USA: 1954