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The UK has planned or executed over 40 attempts to remove foreign governments in 27 countries since the end of the Second World War, involving the intelligence agencies, covert and overt military interventions and assassinations, Declassified has found.


12 JANUARY 2023MI6 arranged the assassination of Congo’s first democratically elected president Patrice Lumumba in 1961. (Photo: Bettmann via Getty)

Probably the most well-known coup staged by British intelligence since 1945 was the overthrow of Iran’s democratically-elected government in 1953 – an operation planned with the CIA. But the UK has been involved in at least 41 other attempts to overthrow governments since the end of the Second World War. 

These have ranged from intelligence-led to military-led operations, both overt and covert, with some being successful from Whitehall’s standpoint, while many have failed to achieve their objectives. 

Many remain little known, while others are shrouded in secrecy, with only a few details having emerged.

The year 1953 was in fact a busy one for Whitehall planners since, as well as removing Mohammed Mossadeq in Iran, they sent a gunboat to overthrow the democratically-elected government in British Guiana, led by the popular nationalist Cheddi Jagan. 

At the same time, they were promoting anti-government propaganda operations in another Latin American state, Guatemala. That British campaign prepared the ground for the 1954 CIA-engineered overthrow of another nationalist, and elected government, under Jacobo Arbenz. 

As if this wasn’t enough, UK covert operatives were also busy at the time planning the removal and assassination of Egypt’s president Gamal Abdel Nasser, in various schemes after Nasser took power in a 1952 nationalist revolution. 

Nasser’s assumption to power challenged Britain’s position in the Middle East and the stability of the repressive, conservative monarchies – many of them near-medieval in nature – that Whitehall, then and now, was propping up, especially in the Gulf region.

Indeed, it was such nationalist forces that were the UK’s main enemies in the so-called ‘third world’ after 1945, even as mainstream journalists and academics endlessly wrote about the Soviet threat and the Cold War.

Relentless planning

In the 1950s, British regime change planning was relentless, with further known operations drawn up to promote uprisings against nationalist governments in Syria in 1956 and in 1957, neither of which were fully implemented. 

One plan that was put into effect, however, was the covert war instigated with the US in Indonesia – intended to stimulate an uprising against President Sukarno, beginning in the country’s myriad outer islands. It remains one of the UK’s least known covert operations, and eventually failed.

Sukarno was overthrown a decade later, however, in one of the 20th century’s worst bloodbaths, enacted by the Indonesian military under General Suharto. The declassified files show the UK backed the 1965/66 slaughters of communists, leftists and ordinary villagers, which killed hundreds of thousands of people. 

The UK conducted media operations to counter Sukarno and delivered covert messages to the Generals assuring them of the UK’s acquiescence in their takeover. Suharto ruled Indonesia, often resorting to sheer brutality, for three decades. 

Ruling the world?

Throughout the 1960s there was little let-up in Whitehall officials’ belief they could put in power whoever they wanted, at least in certain countries.

In 1961, evidence suggests that they had a hand in the murder of Patrice Lumumba, Congo’s first democratically-elected leader who was subject to a vicious MI6 and CIA campaign to overthrow him before he was captured and tortured.

Media operations by the Foreign Office’s notorious Information Research Department – a propaganda unit set up in 1948 – also helped overthrow Brazil’s João Goulart in 1964. His programme of ambitious land reform and extending the vote to Brazil’s illiterate population incensed the country’s political, military, and business elite – and the CIA which eventually helped remove him.

By now, Britain was making sure that Cheddi Jagan – who had made a comeback after being removed ten years earlier – could not consolidate his power in British Guiana, as officials rigged the system in a constitutional coup to ensure he could not be elected again.

The mid-1960s was also an era of palace coups in the UK’s client states in the Gulf region. 

In 1964, British military officers based in Saudi Arabia, who were advising the Saudi National Guard, helped Prince Faisal remove his older brother, King Saud. The following year, the British sponsored the removal of the ruler of the emirate of Sharjah – Saqr bin Sultan al-Qasimi – in favour of another – Khalid bin Mohammed Al Kasimi. 

Then in the following year, they conducted a similar exercise in another emirate, Abu Dhabi, again replacing its ruler with his brother – Zayed bin Sultan Al Nayhan, the father of the current president of the United Arab Emirates.

In 1970 came a coup in another closely-controlled British puppet state – Oman – that was organised by British officers. It put in power Sultan Qaboos, who ruled with an iron fist for a further 50 years until his death in 2020.

Assassinating Gaddafi – and a few others

Almost as soon as Muammar Gaddafi seized power in a military coup in Libya in 1969, nationalising British oil operations, Britain tried to remove him. First came a planned uprising and coup in 1970-71, which was not, however, carried out. 

Over a decade later, the UK offered its air bases to US warplanes conducting airstrikes on Tripoli, Libya’s capital, that targeted Gaddafi’s compound, killing a few dozen people but not him.

Britain tried again 10 years later, in 1996, when MI6 secretly funded Islamist militants to assassinate Gaddafi in the city of Sirte, an operation that again killed bystanders but not the Libyan ruler.

In 2011, Britain got him, launching a major air campaign and covert support to Islamist militants on the ground to finally overthrow the regime, with Gaddafi being killed in October of that year.

However, it wasn’t only Gaddafi, Nasser and Lumumba who are believed to have been targeted for assassination, according to evidence that has emerged. Former MI6 officer Richard Tomlinson alleged that MI6 drew up plans to kill Yugoslav leader Slobodan Milosevic in 1992. 

Then there is Uganda. In 1969, it has been contended that the UK planned the assassination of President Milton Obote – who Britain confronted because of his nationalist economic policies and his opposition to apartheid South Africa.  

In the mid-1970s, prime minister Harold Wilson proposed assassinating the murderous Idi Amin, Obote’s successor. By the late 1970s, foreign secretary David Owen said that he also proposed assassinating Amin, who eventually lived out his days in exile in Saudi Arabia. 

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