In what year did the United states and the Soviet Union establish diplomatic relations?

The United States and Soviet Union establish diplomatic relations in November 1933. The United States established diplomatic relations with the Soviet Union 16 years after it had broken off relations with Russia when the Bolshevik Party came to power. It was President Franklin D. Roosevelt who ended the 16 years non-recognition split between the two nations. Following a series of negotiations in Washington, D.C., Roosevelt worked with the Soviet Commissar for Foreign Affairs, Maxim Litvinov to create a good structure that would allow official diplomatic relations to function as each country needed.

President Roosevelt named William C. Bullitt, Jr. (1891–1967), journalist, novelist, and diplomat, as ambassador to Soviet Union from 1933 to 1936. It was reported at the time that Bullitt arrived in Moscow with high hopes for Soviet–American relations. His view of the Soviet leadership would later greatly sour. By the end of his tenure, he was openly hostile to the Soviet government especially its leadership. He would remain an outspoken anti-communist until the time of his death at 76 in Neuilly-sur-Seine, France.