Zimbabwe's President Robert Mugabe arrives in a helicopter at a rally held in Chitumgwiza stadium June 23, 2000. Mugabe gave a fighting speech on Friday at a rally on the eve of Zimbabwe's election, lambasting the opposition as white stooges.

Zimbabwe's President Robert Mugabe greets the crowd at his final election rally in this town, 100 kms west of Harare April 7, 1995. Zimbabwe's weekend general elections, already won in advance by Mugabe's ruling party ZANU-PF, are being watched for voter turnout to assess political popularity.

A woman walks past election graffiti in Harare, March 28, 2008. Zimbabwe goes to the polls in parliamentary and presidential elections on March 29. "Bob" refers to Zimbabwe's President Robert Mugabe.

Zimbabweans queue at Sadza village south of Harare June 24, 2000 to cast thier vote in elections June 24, that pose the first threat to the unbroken rule of President Robert Mugabe's ZANU-PF party since independence in 1980. Voters started casting their ballots in the two-day poll shortly after 7 a.m. (0500 GMT) in over 4,000 polling stations across the southern African country.

Renowned wildlife artist Larry Norton (L), his wife Sara and their 6 month old daughter Madeline look at their home for the last time before vacating their farm, August 8, 2002. Robert Mugabe's government ordered almost 3,000 white farmers to vacate their farms by midnight August 8 in order to make way for landless peasants.

Zimbabwe President Robert Mugabe (R) greets his Palestinian counterpart Yasser Arafat upon his arrival in the capital to attend the World Solar Summit September 15, 1996. The international conference called to drum up political support for the use and developments of solar and other renewable sources of energy opens in Zimbabwe on Monday. The two-day summit has attracted only a handful of heads of state and governments.

Protesters calling for Zimbabwean President Robert Mugabe to step down cheer in front of a military vehicle in Harare, Zimbabwe, November 18, 2017.

Protesters calling for Zimbabwean President Robert Mugabe to resign attend a prayer meeting outside parliament in Harare, Zimbabwe, November 21, 2017.

Zimbabwe President Robert Mugabe (L) speaks to his wife Grace during the funeral of his sister, Bridget, in the village of Zvimba, 90 km (55 miles) west of Harare January 21 2014. Mugabe attributed his long life to God's will but shied away from commenting on his health on Tuesday, a day after scotching rumours he was sick by appearing in public for the first time in several weeks. Mugabe, who has ruled the former British colony since independence in 1980, turns 90 in exactly a month, making his state of health the hottest topic for Zimbabwe's 13 million people and its ruling ZANU-PF party.

The Princess of Wales talks to Zimbabwean President Robert Mugabe when she paid a courtesy visit at Harare's State house, July 10, 1993. Princess Diana is on a four-day visit to Zimbabwe and will visit welfare projects and a Mozambican refugee camp.

A woman suffering from the symptoms of cholera is taken in a wheelbarrow to a clinic in Harare December 12, 2008. Zimbabwean President Robert Mugabe announced on Thursday his government had stopped a cholera outbreak that has killed nearly 800 people, but the United Nations said the death toll was rising. The United States, which has called on Mugabe to step down, said the outbreak was worsening and South African officials declared a stretch of the border with Zimbabwe a disaster zone because of Zimbabweans fleeing in search of treatment.

Zimbabwean President Robert Mugabe watches a video presentation during the summit of the Southern African Development Community (SADC) in Johannesburg, August 17, 2008. Zimbabwe's ruling party and the main opposition have not yet reached a power-sharing agreement, an opposition spokesman said on Sunday. REUTERS/Mike Hutchings

Military vehicles and soldiers patrol the streets in Harare, Zimbabwe, November 15,2017.

Delegates celebrate after Zimbabwean President Robert Mugabe was dismissed as party leader at an extraordinary meeting of the ruling ZANU-PF's central committee in Harare, Zimbabwe November 19, 2017.

The crowd cheers as Zimbabwe's President Robert Mugabe addresses during Heroes Day commemorations in Harare, August 12, 2013. Mugabe told critics of his disputed re-election to "go hang" on Monday, dismissing his rivals as "Western-sponsored stooges" at a the liberation war commemoration that was boycotted by his principal challenger. The Movement for Democratic Change (MDC) of Mugabe's rival Morgan Tsvangirai filed a court challenge on Friday against the announced landslide win of Mugabe and his ZANU-PF party in the July 31 vote, alleging widespread rigging and intimidation.

Zimbabwe's President Robert Mugabe sleeps during the speech of Libya's leader Muammar Gaddafi at the start of the third European Union-Africa summit in Tripoli November 29, 2010. Gaddafi warned the European Union on Monday that Africa would turn to other trade partners if the EU kept trying to dictate to the continent how it should develop.

Customers walk towards empty shelves inside a supermarket in Harare, July 2, 2007. Zimbabwe's government on Monday threatened to close businesses defying its order to halve prices, accusing them of working to topple President Robert Mugabe.

Zimbabwe President Robert Mugabe, followed by Police Commissioner Augustine Chihuri, inspects troops outside Parliament July 23, 2002. Mugabe opened the third session of the fifth parliament following disputed Presidential elections in March.

Cuban President Fidel Castro (R) and Zimbabwe's President Robert Mugabe stand at attention during an arrival ceremony at the Palace of the Revolution in Havana September 18, 1999. Mugabe and Castro will hold official talks and sign several bilateral agreements before Mugabe departs for New York City on September 19 to attend meetings of the United Nations General Assembly.

Zimbabwe's President Robert Mugabe sits before their EU-Africa summit in Lisbon, December 8, 2007. European and African leaders will seek to forge a fresh partnership to tackle issues like trade, immigration and peacekeeping this week when they hold their first summit in seven years.

Zimbabwe President Robert Mugabe talks with U.S. civil rights leader Rev. Jesse Jackson July 25, 1997 at the last plenary session of the African-American Summit. The conference hopes to improve business between the United States and Africa.

Zimbabwean President Robert Mugabe speaks at an election rally in Bindura, 80 Km's north of the capital, April 7, 2000. Mugabe vowed to fight the country's white farmers for access to their land and accused the farmers of bankrolling the new opposition party the Movement for Democratic Change (MDC).

A Zimbabwean woman holds a loaf of white bread and its cost of Z$45,000 ($ 0.45) in the capital Harare February 16, 2006. Zimbabwe averted possible expulsion from the IMF by clearing its major debt arrears but analysts say President Robert Mugabe may be reluctant to implement reforms needed to unlock aid for a gravely ill economy.The southern African country is battling a deepening economic crisis which critics blame on Mugabe and which has driven inflation to the highest level in the world, according to International Monetary Fund (IMF) data. The current inflation rate is pegged at 613.2 percent but it is expected to rise to between 700-800 percent, further squeezing a population already battered by six years of recession.

Zimbabwe President Robert Mugabe attends a university graduation ceremony in Harare, Zimbabwe, November 17, 2017.

Motorists queue up at a city centre fuel station to get a ration of petrol between 15 and 25 litres March 9, 2000. Zimbabwe President Robert Mugabe said on Wednesday the southern African country, grappling with an acute three-month old fuel crisis, had made some headway in negotiating a Z$4 billion (US$105.3 million) oil import facility with Kuwait, state media reported.

Zimbabwe President Robert Mugabe lights the independence flame during the 29th Independence Celebrations at the National Stadium in Harare, April 18, 2009. Mugabe and his rival, Prime Minister Morgan Tsvangirai, celebrated independence from Britain together for the first time on Saturday, a possible sign that political tensions are easing. REUTERS/Philimon Bulawayo

President Robert Mugabe and new wife Grace leave the Kutama Catholic Church August 17, 1996 after exchaning their wedding vows. The couple were traditionally married shortly after the death of Mugabe's first wife Sally. The ceremony was attended by six thousand invited guests.