President Mugabe failed to resign before deadline
Ruling Zanu-PF party said it would start impeachment proceedings
They accuse First Lady Grace Mugabe of usurping power
They also say the 93-year-old is too old to be physically capable
He has already been dismissed as leader of Zanu-PF party
His sacked deputy Emmerson Mnangagwa is now Zanu-PF leader
First Lady Grace Mugabe has been expelled from the party
Nick Mangwana has told the BBC he expects President Robert Mugabe to be impeached by the end of the week.
They were dealing with a "very stubborn man", Zanu-PF's UK representative said.
Quote MessageHe is going to fight to the death.
Quote MessageHe can't do it [resign] himself, we have to do it for him."
Nick Mangwana, the UK representative of the ruling party Zanu-PF, told the BBC he watched Robert Mugabe's speech with "utter disappointment".
Quote MessageRobert Mugabe has just rained on Zimbabwe's spirit.
Quote MessageEvery one of my compatriots is downcast.
Quote MessageI am very sad."
Milton Nkosi
BBC Africa, Johannesburg
There were military officers in fatigues pushing the papers in front of President Robert Mugabe as he made his speech... but still there is no resignation.
Mr Mugabe will not give in until he is impeached.
It is quite clear that he is holding the line that he has been holding all week.
Lucy Fleming
BBC News
Earlier today Zimbabwe's ruling Zanu-PF party gave President Robert Mugabe until 10:00 GMT tomorrow to resign as president, or face impeachment.
Impeaching the president would require a two-thirds majority in both houses of Zimbabwe's parliament, which is due to resume on Tuesday.
Zanu-PF has an overwhelming majority in both houses, but it may be that after meeting the top military commanders today, they have decided to give the 93-year-old leader a more dignified exit.
However, his failure to resign is likely to come as shock to many Zimbabweans who witnessed an historic anti-Mugabe march in the capital, Harare, on Saturday.
Here people had gathered in a bar in Harare to watch his speech.
Image source, ReutersRead more: Respect your elders
BBC reporters tweet
Allow Twitter content?
This article contains content provided by Twitter. We ask for your permission before anything is loaded, as they may be using cookies and other technologies. You may want to read Twitter’s cookie policy, external and privacy policy, external before accepting. To view this content choose ‘accept and continue’.
Allow Twitter content?
This article contains content provided by Twitter. We ask for your permission before anything is loaded, as they may be using cookies and other technologies. You may want to read Twitter’s cookie policy, external and privacy policy, external before accepting. To view this content choose ‘accept and continue’.
Allow Twitter content?
This article contains content provided by Twitter. We ask for your permission before anything is loaded, as they may be using cookies and other technologies. You may want to read Twitter’s cookie policy, external and privacy policy, external before accepting. To view this content choose ‘accept and continue’.
Allow Twitter content?
This article contains content provided by Twitter. We ask for your permission before anything is loaded, as they may be using cookies and other technologies. You may want to read Twitter’s cookie policy, external and privacy policy, external before accepting. To view this content choose ‘accept and continue’.
And the Associated Press tweets his closing remarks:
Allow Twitter content?
This article contains content provided by Twitter. We ask for your permission before anything is loaded, as they may be using cookies and other technologies. You may want to read Twitter’s cookie policy, external and privacy policy, external before accepting. To view this content choose ‘accept and continue’.
Lucy Fleming
BBC News
It looks like President Robert Mugabe, 93, is going to stay on as Zimbabwe's leader at least until the ruling Zanu-PF's congress in December.
This is when party positions are officially ratified - and when Emmerson Mnangagwa, who was made Zanu-PF leader today by its central committee, may officially take over leading the country.
President Mugabe has finished his speech, confounding expectations that he would resign.
Mr Mugabe has said he will preside over the Zanu-PF congress due to be held in December.
A Twitter account that monitors the media in Zimbabwe says President Mugabe's speech has all the hallmarks of his personal spokesman George Charamba:
Allow Twitter content?
This article contains content provided by Twitter. We ask for your permission before anything is loaded, as they may be using cookies and other technologies. You may want to read Twitter’s cookie policy, external and privacy policy, external before accepting. To view this content choose ‘accept and continue’.
BBC Radio 4 Today presenter tweets...
Allow Twitter content?
This article contains content provided by Twitter. We ask for your permission before anything is loaded, as they may be using cookies and other technologies. You may want to read Twitter’s cookie policy, external and privacy policy, external before accepting. To view this content choose ‘accept and continue’.
President Mugabe has been covering a number of topics.
He has acknowledged that the country's economy is going through a "difficult patch".
He has also hailed the Zimbabwean national character and spoken of a "tradition of resistance".
He is now speaking about the party he ran until today, Zanu-PF.
He says the party has strict rules that have to followed.
President Robert Mugabe is reading his address flanked by military commanders and those who have been negotiating with him since the military takeover, including Catholic cleric Fidelis Mukonori:
Mr Mugabe says that he acknowledges the concerns that were raised by the military in meetings following its intervention.
He says the intervention was "triggered by concerns arising from their reading of the state of affairs in our country and in the ruling Zanu-PF party".
He says that Zimbabwe needs to "return to normalcy".
Mr Mugabe says a meeting with the military leaders today has made him aware of issues that need to be addressed in the country.
A frail President Mugabe has begun speaking
Zimbabwe's state broadcaster ZBC has introduced a segment that appears to be President Mugabe's address:
Allow Twitter content?
This article contains content provided by Twitter. We ask for your permission before anything is loaded, as they may be using cookies and other technologies. You may want to read Twitter’s cookie policy, external and privacy policy, external before accepting. To view this content choose ‘accept and continue’.
The state-run Chronicle newspaper has tweeted a photo of army generals seated and waiting for Mr Mugabe to give his address. He is expected to say that he will resign.
A Wall Street Journal reporter in Zimbabwe's capital, Harare, tweets that the presidential guard has been deployed to the residence of Emmerson Mnangagwa, the new Zanu-PF leader who is expected to take over as president if Robert Mugabe quits:
Allow Twitter content?
This article contains content provided by Twitter. We ask for your permission before anything is loaded, as they may be using cookies and other technologies. You may want to read Twitter’s cookie policy, external and privacy policy, external before accepting. To view this content choose ‘accept and continue’.
This is a photo of President Mugabe inspecting the presidential guard in August:
Image source, AFP
Image source, AFPZimbabwean President Robert Mugabe carried on with his speech in parliament in 2015 despite heckles
Some tweeters have been joking that those close to 93-year-old Robert Mugabe should make sure the Zimbabwean president reads the correct speech tonight.
In 2015, he was heckled by opposition MPs when he read out the wrong speech at the opening of parliament.
Instead he delivered a state-of-the-nation address he'd given the month before - and correspondents described it at the time as the most embarrassing blunder in his long political career.
BBC correspondent Nomsa Maseko is among those who have cited the error as the leader, who has been in power since 1980, prepares to address the nation five days after the military took power:
Allow Twitter content?
This article contains content provided by Twitter. We ask for your permission before anything is loaded, as they may be using cookies and other technologies. You may want to read Twitter’s cookie policy, external and privacy policy, external before accepting. To view this content choose ‘accept and continue’.
Allow Twitter content?
This article contains content provided by Twitter. We ask for your permission before anything is loaded, as they may be using cookies and other technologies. You may want to read Twitter’s cookie policy, external and privacy policy, external before accepting. To view this content choose ‘accept and continue’.
Allow Twitter content?
This article contains content provided by Twitter. We ask for your permission before anything is loaded, as they may be using cookies and other technologies. You may want to read Twitter’s cookie policy, external and privacy policy, external before accepting. To view this content choose ‘accept and continue’.
The Guardian's Africa Correspondent Jason Burke jokes that the state broadcaster could clear the country's national debt by selling advertising for a commercial break during Mr Mugabe's expected speech, such is the interest in it among Zimbabweans and around the world.