According to many politicians our history with Iran begins in 1979? - CIA Confirms Role in 1953 Iran Coup [View all]

https://nsarchive2.gwu.edu/NSAEBB/NSAEBB435/

"Washington, D.C., August 19, 2013 – Marking the sixtieth anniversary of the overthrow of Iranian Prime Minister Mohammad Mosaddeq, the National Security Archive is today posting recently declassified CIA documents on the United States' role in the controversial operation. American and British involvement in Mosaddeq's ouster has long been public knowledge, but today's posting includes what is believed to be the CIA's first formal acknowledgement that the agency helped to plan and execute the coup.

.... Also, the public release of these materials is noteworthy because CIA documents about 1953 are rare. First of all, agency officials have stated that most of the records on the coup were either lost or destroyed in the early 1960s, allegedly because the record-holders' "safes were too full."[2]

Regarding public access to any remaining files (reportedly about one cubic foot of material), the intelligence community's standard procedure for decades has been to assert a blanket denial. This is in spite of commitments made two decades ago by three separate CIA directors. Robert M. Gates, R. James Woolsey, and John M. Deutch each vowed to open up agency historical files on a number of Cold War-era covert operations, including Iran, as a sign of the CIA's purported new policy of openness after the collapse of the USSR in 1991.[3]

....But all 21 of the CIA items posted today (in addition to 14 previously unpublished British documents — see Sidebar), reinforce the conclusion that the United States, and the CIA in particular, devoted extensive resources and high-level policy attention toward bringing about Mosaddeq's overthrow, and smoothing over the aftermath."