The British Foreign Office approached the Truman administration on more than one occasion in late 1952 to propose a coup to overthrow Iranian Prime Minister Mohammad Mosaddeq, according to freshly declassified State Department documents. Posted today for the first time, two previously Top-Secret memoranda from senior officials at State refer to a series of communications and meetings beginning in October 1952 in which British officials tried to win U.S. approval of Mosaddeq’s ouster.

Today’s posting consists of the most explicit, officially declassified records on the subject released to date by any government.

The two documents were originally considered for inclusion in the latest official U.S. publication on the coup period. In June 2017, the State Department published a 1,007-page compilation of declassified State, Central Intelligence Agency, and National Security Council documents as part of its Foreign Relations of the United States (FRUS) series. But while both records are mentioned in the volume by title and date, their content was withheld in its entirety.