Iran and the United States have had no formal diplomatic relations since 1980. Pakistanserves as Iran’s protecting power in the United States. while Switzerland serves as the United States’ protecting power in Iran. Contacts are carried out through the Iranian Interests Section of the Pakistani Embassy in Washington, D.C. and the US Interests Section of the Swiss Embassy in Tehran.
As of 2018, Supreme Leader of Iran Ali Khameneibanned direct talks with the United States.Relations between the two nations began in the mid-to-late nineteenth century. when Iranwas known to the west as Persia.
Initially, while Iran was very wary of British and Russian colonial interests during the Great Game, the United States was seen as a more trustworthy foreign power, and the Americans Arthur Millspaugh and Morgan Shuster were even appointed treasurers-general by the Shahs of the time.
During World War II, Iran was invaded by the United Kingdom and the Soviet Union, both US allies, but relations continued to be positive after the war until the later years of the government of Mohammad Mosaddegh, who was overthrown by a coup organized by the Central Intelligence Agency and aided by the MI6.
This was followed by an era of very close alliance and friendship between Shah Mohammad Reza Pahlavi’s regime and the US government, Iran being one of the US’ closest allies.
which turn followed by a dramatic reversal and disagreement between the two countries.