A campaign for justice by survivors of a series of massacres carried out by troops loyal to ex-Zimbabwean President Robert Mugabe in the eighties has cast renewed light on alleged British complicity in covering up the killings.
A conference of survivors and relatives of victims of the 1983-1987 Matabeleland massacres, also known as the Gukurahundi, has called on Zimbabwean President Emmerson Mnangagwa to launch a truth and reconciliation commission into the atrocities.
But a British academic who has studied British archives says there is also evidence that Margaret Thatcher's Government deliberately ignored the killings and even tried to water down media reports about the atrocities.
Hazel Cameron, a lecturer in international relations at the University of St Andrews and the only researcher to have seen the British documents, said there was no doubt officials were aware of the atrocities but failed to act.
"As early as February 17, 1983, Western governments including the British Government had access to information of shocking atrocities and suggestions from witnesses that this was similar to what the Nazis carried out against the Jews, but they were willing to turn a blind eye to it," said Cameron, who published a paper on Britain's "Wilful Blindness" to the massacres last year.