Singapore: Zimbabwe's former president Robert Mugabe has died aged 95, the country's President Emmerson Mnangagwa said on his official Twitter account.

Mugabe died in Singapore, where he has often received medical treatment in recent years, a source with direct knowledge of the matter told Reuters.

"It is with the utmost sadness that I announce the passing on of Zimbabwe's founding father and former President, Cde Robert Mugabe," a post on Mnangagwa's official presidential Twitter account said.

From liberator to oppressor

Robert Mugabe was feted as an African liberation hero and champion of racial reconciliation when he first came to power in a nation divided by nearly a century of white colonial rule.

Nearly four decades later, many at home and abroad denounced him as a power-obsessed autocrat willing to unleash death squads, rig elections and trash the economy in the relentless pursuit of control.

Mugabe, who died in Singapore aged 95, was ultimately ousted by his own armed forces in November 2017.

He demonstrated his tenacity - some might say stubbornness - to the last, refusing to accept his expulsion from his own ZANU-PF party and clinging on for a week until parliament started to impeach him after the de facto coup.

His resignation triggered wild celebrations across the country of 13 million. For Mugabe, it was an "unconstitutional and humiliating" act of betrayal by his party and people, and left him a broken man.

Confined for the remaining years of his life between Singapore where he was receiving medical treatment and his sprawling "Blue Roof" mansion in Harare, an ailing Mugabe could only observe from afar the political stage where he once strode tall. He was bitter to the end over the manner of his exit.

On the eve of the July 2018 election, the first without him, he told reporters he would vote for the opposition, something unthinkable only a few months before.

Educated and urbane, Mugabe took power in 1980 after seven years of a liberation bush war and - until the army's takeover - was the only leader Zimbabwe, formerly Rhodesia, knew since independence from Britain.

But as the economy imploded starting from 2000 and his mental and physical health waned, Mugabe found fewer people to trust as he seemingly smoothed a path to succession for his wife Grace, four decades his junior and known to her critics as "Gucci Grace" for her reputed fondness for luxury shopping.

"It's the end of a very painful and sad chapter in the history of a young nation, in which a dictator, as he became old, surrendered his court to a gang of thieves around his wife," Chris Mutsvangwa, leader of Zimbabwe's influential liberation war veterans, told Reuters after Mugabe's removal.

'A jewel'

Born on Feb. 21, 1924, on a Roman Catholic mission near Harare, Mugabe was educated by Jesuit priests and worked as a primary school teacher before going to South Africa's University of Fort Hare, then a breeding ground for African nationalism.

Returning to then-Rhodesia in 1960, he entered politics but was jailed for a decade four years later for opposing white rule.

When his infant son died of malaria in Ghana in 1966, Mugabe was denied parole to attend the funeral, a decision by the government of white-minority leader Ian Smith that historians say played a part in explaining Mugabe's subsequent bitterness.

After his release, he rose to the top of the powerful Zimbabwe African National Liberation Army, known as the "thinking man's guerrilla" on account of his seven degrees, three of them earned behind bars.

Later, as he crushed his political enemies, he boasted of another qualification: "a degree in violence".

After the war ended in 1980, Mugabe was elected the nation's first black prime minister.

"You have inherited a jewel in Africa. Don't tarnish it," Tanzanian President Julius Nyerere told him during the independence celebrations in Harare.

Initially, Mugabe offered forgiveness and reconciliation to old foreign and domestic adversaries, including Smith, who remained on his farm and continued to receive a government pension.

In his early years, he presided over a booming economy, spending money on roads and dams and expanding schooling for black Zimbabweans as part of a wholesale dismantling of the racial discrimination of colonial days.

With black and white tension easing, by the mid-1980s many whites who had fled to Britain or South Africa, then still under the yoke of apartheid, were trying to come home.

No challenges

But it was not long before Mugabe began to suppress challengers, including liberation war rival Joshua Nkomo.

Faced with a revolt in the mid-1980s in the western province of Matabeleland that he blamed on Nkomo, Mugabe sent in North Korean-trained army units, provoking an international outcry over alleged atrocities against civilians.

Human rights groups say 20,000 people died, most of them from the minority Ndebele tribe from which Nkomo's partisans were largely drawn. The discovery of mass graves prompted accusations of genocide.

After two terms as prime minister, Mugabe tightened his grip on power by changing the constitution, and he became president in 1987. His first wife, Sally, who had been seen by many as the only person capable of restraining him, died in 1992.

A turning point came at the end of the decade when Mugabe, by now a leader unaccustomed to accommodating the will of the people, suffered his first major defeat at the hands of voters, in a referendum on another constitution. He blamed his loss on the white minority, chastising them as "enemies of Zimbabwe".

Days later, a groundswell of black anger at the slow pace of land reform started boiling over and gangs of black Zimbabweans calling themselves war veterans started to overrun white-owned farms.

Mugabe's response was uncompromising, labelling the invasions a correction of colonial injustices.

"Perhaps we made a mistake by not finishing the war in the trenches," he said in 2000. "If the settlers had been defeated through the barrel of a gun, perhaps we would not be having the same problems."

The farm seizures helped ruin one of Africa's most dynamic economies, with a collapse in agricultural foreign exchange earnings unleashing hyperinflation.

The economy shrank by more than a third from 2000 to 2008, sending unemployment above 80 percent. Several million Zimbabweans fled, mostly to South Africa.

Brushing aside criticism, Mugabe portrayed himself as a radical African nationalist competing against racist and imperialist forces in Washington and London.

Rock bottom

The country hit rock bottom in 2008, when 500 billion percent inflation drove people to support the challenge of Western-backed former union leader Morgan Tsvangirai.

Facing defeat in a presidential run-off, Mugabe resorted to violence, forcing Tsvangirai to withdraw after scores of his supporters were killed by ZANU-PF thugs.

South Africa, Zimbabwe's neighbour to the south, squeezed the pair into a fractious unity coalition but the compromise belied Mugabe's grip on power through his continued control of the army, police and secret service.

As old age crept in and rumours of cancer intensified, his animosity towards Tsvangirai eased and the two men enjoyed weekly meetings over tea and scones, in a nod to Mugabe's affection for British traditions.

On the eve of the 2013 election, Mugabe dismissed cries of autocracy and likened dealing with Tsvangirai to sparring in the ring. "Although we boxed each other, it's not as hostile as before," he told reporters.

Even as he spoke, Mugabe's agents were busy finalising plans to engineer an election victory through manipulation of the voters' roll, according to the Tsvangirai camp.

It was typical of Mugabe's ability to out-think - and if necessary out-fight - his opponents, a trait that drew grudging respect from even his sternest critics.

Writing in a 2007 cable released by WikiLeaks, then-US ambassador to Harare Christopher Dell reflected the views of many: "To give the devil his due, he is a brilliant tactician."