Newly disclosed documents show that the Foreign Office advised against British military intervention to overthrow the former Zimbabwean president, the long-serving leader, in 2004, stating it was not considered a "serious option".
Internal documents from Tony Blair's government indicate officials considered options on how best to handle the "depressingly healthy" 80-year-old dictator, who refused to step down as the country fell into turmoil and financial collapse.
Following the ruling party winning a 2005 election, and a year after the UK participated in a US-led coalition to oust Iraqi leader Saddam Hussein, No 10 asked the Foreign Office in July 2004 to produce potential options.
Diplomats concluded that the UK's strategy to isolate Mugabe and forging an international consensus for change was failing, having not managed to secure support from influential African states, notably the then South African president, Thabo Mbeki.
Courses considered in the files included:
"Our experience shows from conflicts abroad that altering a government and/or its harmful policies is exceedingly difficult from the outside."
The FCO paper rejected military action as not a "realistic option," adding that "The only candidate for leading such a military operation is the UK. No other country (even the US) would be prepared to do so".
It cautioned that military intervention would cause significant losses and have "serious consequences" for British people in Zimbabwe.
"Short of a severe human and political catastrophe – resulting in widespread bloodshed, large-scale refugee flows, and regional instability – we judge that no African state would support any attempts to remove Mugabe by force."
The paper continues: "Nor do we judge that any other international ally (including the US) would authorise or participate in military intervention. And there would be no jurisdictional basis for doing so, without an authorising Security Council Resolution, which we would fail to obtain."
The Prime Minister's advisor, a senior official, advised Blair that Zimbabwe "could become a significant obstacle" to his plan to use the UK's leadership of the G8 to make 2005 "a pivotal year for Africa". Lee concluded that as military action had been ruled out, "we probably have to accept that we must adopt a long-term strategy" and re-engage with Mugabe.
Blair seemed to concur, noting: "We should work out a way of revealing the lies and malpractice of Mugabe and Zanu-PF up to this election and then afterwards, we could try to re-engage on the basis of a clear understanding."
The departing ambassador, in his final diplomatic dispatch, had recommended critical re-engagement with Mugabe, though he recognized the Prime Minister "might shudder at the thought given all that Mugabe has uttered and perpetrated".
Robert Mugabe was ultimately removed in a 2017 coup, at the age of 93. Earlier assertions that in the early 2000s Blair had tried to pressurise the South African president into joining a military coalition to overthrow Mugabe were strongly denied by the former UK premier.
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