Robert Mugabe, Zimbabwe's first post-independence leader, has died aged 95.
His family confirmed his death to the BBC. Mr Mugabe had been receiving treatment in a hospital in Singapore since April.
He was ousted in a military coup in 2017 after 37 years in power.
Mr Mugabe's early years were praised for broadening access to health and education for the black majority - but his later years were marked by rights abuses and corruption.
He won Zimbabwe's first election after it secured independence from the UK, becoming prime minister in 1980.
He abolished the office in 1987, becoming president instead.
His successor, Emmerson Mnangagwa, expressed his "utmost sadness", calling Mr Mugabe "an icon of liberation".
“It is with the utmost sadness that I announce the passing on of Zimbabwe's founding father and former President, Cde Robert Mugabe. Cde Mugabe was an icon of liberation, a pan-Africanist who dedicated his life to the emancipation and empowerment of his people. His contribution to the history of our nation and continent will never be forgotten. May his soul rest in eternal peace,” said Mr Mnangagwa via Tweeter.
Mr Mnangagwa had been Mr Mugabe's deputy before replacing him.
Mr Mugabe was born on 21 February 1924 in what was then Rhodesia. The country, once a British colony, was run by a white minority.
He was imprisoned for more than a decade without trial after criticising the government of Rhodesia in 1964.
In 1973, while still in prison, he was chosen as president of the Zimbabwe African National Union (Zanu), of which he was a founding member.
Once released, he headed to Mozambique, directing guerrilla raids into Rhodesia. But he was also seen as a skilled negotiator.
Political agreements to end the crisis resulted in the new independent Republic of Zimbabwe.
Mr Mugabe, with his high profile in the independence movement, secured an overwhelming victory in the republic's first election.
But over his decades in power, the international perception of Mr Mugabe soured, with an increasing number of critics portraying him as a kind of dictator.
In 2000, facing
Around the same time, pro-Mugabe militias used violence to influence political outcomes. In 2008, when he lost the first round of the presidential election, attacks on the opposition resulted in his rival pulling out of the contest.
He was forced into sharing power in 2009 amid economic collapse, installing rival Morgan Tsvangirai as prime minister.
But in 2017, amid concerns that he was grooming his wife Grace as his successor, the army - his long-time ally - turned against the president and forced him to step down.
What has the reaction been?
Deputy Information Minister Energy Mutodi, of Mr Mugabe's Zanu-PF party, told the BBC the party was "very much saddened" by the former leader's death.
"As a government, we are very much with the family members of the Mugabe family," he said.
"He was a principled man, he could not change easily over his beliefs, he's a man who believed himself, he's a man who believed in what he did and he is a man who was very assertive in whatever he said."
"This was a good man."
Not everyone agreed, however.
Zimbabwean Senator David Coltart tweeted that Mr Mugabe's legacy was one of "violence, disrespect for the rule of law, corruption & abuse of power".
Robert Mugabe - key dates
1924: Born. Later trains as a teacher
1964: Imprisoned by Rhodesian government
1980: Wins post-independence elections
1996: Marries Grace Marufu
2000: Loses referendum, pro-Mugabe militias invade white-owned farms and attack opposition supporters
2008: Comes second in first round of elections to Tsvangirai who pulls out of run-off amid nationwide attacks on his supporters
2009: Amid economic collapse, swears in Tsvangirai as prime minister, who serves in uneasy government of national unity for four years
2017: Sacks long-time ally Vice-President Emmerson Mnangagwa, paving the way for his wife Grace to succeed him
November 2017: Army intervenes and forces him to step down