In 1951, the largest oil refinery on Earth stood on a mud flat in the Shatt al-Arab waterway in Iran. The Abadan refinery, a sprawling industrial complex covering a square mile of desert, processed 25 million tons of crude oil a year. Every drop of that oil and every penny of its profit belonged to the Anglo-Iranian Oil Company, which is known today as BP. For the British government, the refinery was a life support machine.
Britain had emerged from World War II victorious but penniless, with an empty treasury, massive debt to the United States, and a population living on rations. The hard currency earned by Iranian oil kept the British economy from total collapse, fueled the Royal Navy, and powered the factories of the Midlands. The problem was that this engine of wealth sat in a country the British had long treated as a resource extraction zone. In Abadan, British administrators lived in a segregated enclave with cricket pitches, swimming pools, and air-conditioned bungalows, importing their food from London.
Just outside the fence, Iranian workers lived in shanty towns made of flattened oil drums, with no running water and no electricity, earning pennies for their labor. The financial imbalance was stark. In 1950, the Anglo-Iranian Oil Company made a profit of 170 million pounds, yet paid the Iranian government less than 16 million pounds in royalties. The British government collected more in taxes from the company than Iran received for its own natural resource.
That resentment boiled over in 1951 under the leadership of Mohammad Mosaddegh. The elderly, frail prime minister was dismissed by British diplomats as a hysteric and a madman, but he was a passionate nationalist who argued a simple point: the oil under Iranian soil belonged to the Iranian people. He demanded a fair 50/50 split of profits, similar to a deal American companies had recently signed with Saudi Arabia. The British refused.
The chairman of the Anglo-Iranian Oil Company, Sir William Fraser, believed any concession would be a sign of weakness and that the Iranians needed British technicians too badly to follow through on their threats. Fraser’s arrogance lit the fuse. On March 15, 1951, the Iranian parliament voted unanimously to nationalize the oil industry. Weeks later, Mosaddegh was elected prime minister.
The news hit London as a humiliation and a signal that the British lion was toothless. Military chiefs drew up invasion plans for a mission called Operation Buccaneer, but the Treasury rejected them. Britain could not afford a war, and President Harry Truman warned he would not back a British invasion of Iran. Operation Buccaneer was shelved.
Instead, Britain launched an economic war. The Royal Navy blockaded Iranian oil in the Persian Gulf, announcing that any tanker buying Iranian crude would be treated as a buyer of stolen property. British assets were frozen, and exports of steel and sugar to Iran stopped. British staff at Abadan were ordered to leave, boarding the cruiser HMS Mauritius and sailing away as the world’s largest refinery fell silent.
Britain expected the Iranian economy to collapse and the people to overthrow Mosaddegh. Instead, he called for an “economy without oil,” issued bonds, and asked Iranians to endure hardship for sovereignty. The people rallied around him, and he became a hero across the developing world. In October 1951, Winston Churchill returned to power.
At 77 years old, he viewed the loss of Abadan as a personal insult and wanted to dust off the invasion plans. But the economic reality had not changed, and the Americans still refused to back a war. Churchill, realizing Britain was a second-rate power that could not pay for the fuel to send its own fleet, turned to the shadows. MI6 began plotting a coup.
The operation, codenamed Operation Boot, aimed to use bribery and propaganda to create chaos, turn the people against Mosaddegh, and install a pro-British general. But in 1952, Mosaddegh discovered the plot and expelled all British diplomats from Iran, leaving MI6 blind. The British needed the CIA, but Truman had no interest in overthrowing a democratically elected leader to save a British oil monopoly. Truman’s reluctance bought time, but in November 1952, Dwight Eisenhower became president.
Eisenhower appointed John Foster Dulles as Secretary of State and Allen Dulles as CIA director. Both were cold warriors who saw the world as a struggle between the United States and the Soviet Union. Churchill changed his pitch, dropping the oil talk and focusing on communism. British spies told Washington that Mosaddegh was weak, the country was sliding into chaos, and the Iranian Communist Party, the Tudeh, would seize power.
They painted a nightmare of Iran falling behind the Iron Curtain and the Soviets controlling the Persian Gulf. Eisenhower and the Dulles brothers bought it, agreeing to a joint operation. The plan was renamed Operation Ajax, with a budget of one million dollars. Kermit Roosevelt Jr.
, the grandson of Theodore Roosevelt, was chosen to run the operation. In the summer of 1953, he slipped into Iran with a fake passport and a suitcase full of cash. Tehran was a powder keg. The British blockade had wrecked the economy, inflation was rampant, and the middle class was being wiped out.
Roosevelt began by bribing newspaper editors to print vicious attacks on Mosaddegh, calling him an atheist, a British agent, and a communist spy all at once. He then hired gang leaders to organize mobs, paying one mob to shout “Long live Mosaddegh” while smashing shop windows, and another to attack them while shouting “Long live the Shah. ”
The coup had a mechanical trigger. The Shah, young and indecisive, needed to sign two royal decrees: one dismissing Mosaddegh and another appointing General Fazlollah Zahedi.
The Shah, terrified and ready to flee, agreed if he received a signal from the BBC. On the night of the coup, the announcer on the BBC Persian service said “It is now exactly midnight” instead of “It is now midnight. ” The Shah heard the extra word and signed the decrees. On the night of August 15, an Imperial Guard officer drove to Mosaddegh’s house to arrest him.
But Mosaddegh had been tipped off by the Tudeh network inside the military. The arrest failed, the colonel was captured, and the coup collapsed before it started. The Shah fled the country, first to Baghdad, then to Rome. The CIA sent Roosevelt a telegram ordering him to evacuate, reading “Get out while you can.
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Roosevelt ignored the order. He decided to double down, abandoning the military approach for the mob. For three days, he flooded Tehran with cash, paying anyone who could hold a stick. He paid fake communists to attack mosques, knowing it would enrage the religious population, and paid clerics to declare holy war against the government.
On August 19, the second wave hit. Thousands of protesters marched on government buildings, burning the offices of pro-Mosaddegh newspapers and attacking police stations. Army units that had remained neutral began switching sides. General Zahedi, who had been hiding in a CIA safe house, emerged riding on a tank.
The final battle took place at Mosaddegh’s home. Pro-Shah tanks blasted the gates while his guards fought back with machine guns and bazookas. Hundreds were killed. With his ammunition gone and his roof collapsing, Mosaddegh surrendered and was arrested.
The radio announced that his government had been crushed. The Shah returned to Iran in triumph. Churchill lit a fresh cigar, believing the gamble had paid off and the oil was safe. But when the bankers arrived to divide the spoils, the Americans told Churchill the old monopoly was dead.
The deal signed in 1954 forced Anglo-Iranian, renamed British Petroleum, to give up 40 percent of its stake to American oil giants like Standard Oil and Texaco. Another 14 percent went to the Dutch and French. Britain retained only 40 percent of the asset it had once owned completely. The coup ended British supremacy in the Middle East and began the American era.
For a million dollars, the West secured 25 years of cheap oil, the British Treasury was replenished, and dividends were paid. But the real bill came due 25 years later. By destroying Mosaddegh, a democratic secular nationalist, the West sent a message to the Iranian people that democratic change was impossible, that the ballot box could be overturned by the CIA. This left only one avenue for opposition: the mosque.
The Shah restored to his throne became a dictator, owing his crown to foreigners. He created the secret police force SAVAK, known for its brutality, and ruled with an iron fist while wealth stayed at the top and resentment grew. In the mosques, clerics told the story of 1953, of how America and Britain had stolen the nation’s dignity, turning Mosaddegh into a martyr of resistance. In 1979, fueled by the delayed rage of 1953, the Iranian Revolution swept the Shah from power.
When students stormed the US embassy in Tehran and took 52 Americans hostage, they were refighting the battle of 1953—and this time they won. The loss of Iran led to the Iran-Iraq war, the rise of Hezbollah, and the nuclear standoff that continues today. Churchill believed he was saving the British economy, and in the short term he did. But the coup proved that for all the talk of democracy and freedom, the British Empire was a debt collection agency with a spy network.
Britain lost its oil monopoly in 1954 and its influence in 1979, but the hatred sown in those hot August days continues to yield a bitter harvest.