State Department, Memorandum of Conversation, "British Proposal to Organize a Coup d'etat in Iran," Top Secret, December 3, 1952

Source: State Department, Memorandum of Conversation, "British Proposal to Organize a Coup d'etat in Iran," Top Secret, December 3, 1952 Date: Dec 3, 1952 Archive: NARA, RG 59, General Records of the Department of State, 1950-54 Central Decimal File, File: 788.00/12-352 Collection: 1953 Iran Coup: New U.S. Documents Confirm British Approached U.S. in Late 1952 About Ousting Mosaddeq Aug 8, 2017

Editorial Analysis

Original analysis by the DriftSeas editorial desk. The complete primary-source document, transcribed from the National Security Archive scan, appears in full below.

A British Overture, an American Hesitation

On 3 December 1952 senior officials of the U.S. State Department recorded a terse conversation that lay bare the diplomatic calculus preceding the 1953 overthrow of Iran’s Prime Minister Mohammad Mosaddeq. The memorandum, a top‑secret “Memorandum of Conversation,” captures a moment when British officials, represented by Sir Christopher Steel and two intelligence officers, floated a concrete proposal: the United Kingdom would help organize a coup against Mosaddeq, provided the United States would at least tacitly endorse it. The Americans—embodied by Secretary of State Dean Acheson’s deputy, Deputy Secretary of State Robert McNamara‑type figure (identified only as “Mr. Nitze”), and the British‑American liaison, Mr. Burrows—responded with cautious skepticism.

The document emerged from a broader crisis that began in 1951 when Mosaddeq nationalised the Anglo‑Iranian Oil Company, depriving Britain of a lucrative concession and prompting a diplomatic standoff. By late 1952, Britain’s patience had worn thin; its intelligence service had already cultivated contacts within Iran’s military and clerical opposition. The British proposal recorded in this memo reflects a shift from economic pressure to covert regime change, a step that would later be formalised in the CIA‑directed Operation Ajax.

The conversation reveals the divergent strategic cultures of the two allies. Sir Christopher Steel, a veteran of the Foreign Office, bluntly warned that any anti‑Tudeh (Iranian communist) operation would be ineffective without control of the government, implying that a limited “test” campaign could not succeed without Mosaddeq’s removal. The American side, represented by Nitze, entertained the idea of a limited test—targeting the cleric Kashani and the Tudeh Party—to gauge the strength of British‑backed Iranian operatives. The British dismissed this as naïve, insisting that only a full‑scale coup could achieve their objectives. The memo records the Americans’ reluctance to commit: they cite the impending presidential transition (the Eisenhower administration would take office in January 1953) as a reason to defer decisive action.

What the text does not say, but which the subtext betrays, is the degree of mutual dependence. The British intelligence officers were “returning to London almost immediately,” yet the Americans insisted that “further technical discussions be held in the Middle East,” signalling a desire to keep the operation off the Washington radar until a more opportune moment. The instruction that “there should be no further discussion between CIA and the British intelligence representatives on the subject until further notice” underscores a deliberate compartmentalisation—a hallmark of covert action planning that would later characterise the CIA’s own involvement.

Historically, this memo is a missing link that clarifies the chronology of the coup’s gestation. Earlier scholarship often portrayed the United States as the primary architect of the overthrow, with Britain as a peripheral partner. The December 1952 British overture demonstrates that Britain was, at least initially, the proactive initiator, seeking American legitimacy and resources. The United States, still nursing the fallout from the Korean War and wary of an election‑year foreign entanglement, opted for a “wait‑and‑see” stance, hoping a negotiated oil settlement might avert the need for a coup. By early 1953, however, the Eisenhower administration, buoyed by a new National Security Council structure and a more aggressive anti‑communist outlook, would reverse this caution, leading to the joint Anglo‑American operation that toppled Mosaddeq in August.

The significance of the memorandum extends beyond the Iran episode. It illustrates how Cold War imperatives—containment of Soviet influence, protection of Western energy supplies, and the preservation of allied prestige—converged to produce covert regime‑change policies that would recur in Guatemala (1954), Congo (1960), and beyond. Moreover, the document’s explicit acknowledgment that “the best time for the coup would be in the Spring” reveals the meticulous timing considerations that underpinned CIA‑led coups: seasonal weather, political calendars, and the readiness of local conspirators were all factored into the calculus.

For contemporary readers, the memo is a reminder that today’s foreign‑policy decisions often rest on secret deliberations whose outcomes reverberate for decades. The 1952 British proposal, the American hesitation, and the eventual decision to intervene together illustrate how great‑power alliances can produce actions that reshape regional politics, fuel anti‑Western sentiment, and set precedents for covert intervention. The declassification of this conversation allows historians to reassess the balance of agency between London and Washington, and to understand the Iran coup not as a unilateral American plot but as a collaborative Anglo‑American venture born of shared strategic anxieties.