Mnangagwa, who was inaugurated as president on Friday, has promised to compensate white farmers dispossessed of their land.
Mugabe may not go quietly. And other African heads of state may continue to recognise him.
Harare was a happy place to be on Tuesday.
The 93-year-old leader stepped down after a week of protracted negotiations with the military.
A military takeover seems to herald the last days of Africa's oldest ruler, whose tenor has seen Zimbabwe fall into economic despair.
The military has seized the state television station and taken Mugabe and his wife prisoner.
The army will not tolerate leaders who did not participate in the "liberation struggle" that ended white minority rule.
General Constantino Chiwenga warned of military intervention to back independence figures after President Robert Mugabe purged his prominent second-in-command.
A manhunt is underway after the first lady was heckled at a rally.
Robert Mugabe fired his deputy on Monday, paving the way for his wife Grace to succeed him.
Zimbabwe created a cybersecurity ministry in October, in a move critics say was designed to muzzle opposition to the 93-year-old president.
A report that Grace Mugabe donated used underwear to party activists is the latest in a series of embarrassments caused by the first lady.
The African leader gave Trump both barrels for threatening to "totally destroy" North Korea.
The Zimbabwe delegation did not look particularly thrilled by Trump's 41-minute monologue.
Jesimen Chipika said that Zimbabwe's land reform killings were "no worse than South Africa."
The Zimbabwean president said he had been told that Mandela "made mistakes" when negotiating an end to apartheid.
The first lady may struggle to convince Zimbabweans that she is ready to be president after allegedly beating a model with an extension cord.