Robert Mugabe - 92

They should not be too ambitious, because there is no vacancy yet. Let's stop debate on the succession issue for now."-Mugabe on succession, 28 years into his presidency.

Zimbabwe
Zimbabwe - 36 Years - 1980-'16
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Robert Mugabe is serving his 9th term in office since Zimbabwe's independence
from Britain in 1980. In 2008, Mugabe bought a $5,1 million apartment in Hong Kong through a businessman named Hsieh Ping-sung. The property is currently the subject of ongoing litigation between Mugabe, Ping-sung and a company named Cross Global. SOURCE: South China Morning Post

Eduardo Dos Santos - 74

The merit of a democratic regime rests on one's continual willingness to exchange views, and to compete on the basis of individual merit and capacities." -Dos Santos.

Angola
Angola - 37 Years - 1979-'16
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In 2013, Forbes Magazine named Dos Santos' daughter, Isabel Dos Santos as Africa's first woman billionaire, with an estimated total worth of $3 billion.

Teodoro Nguema - 73

"The negative effects of illiteracy, lack of shelter and malnutrition, typical of underdeveloped countries, are greater than the effects produced by catastrophes and natural disasters."

Equatorial Guinea
Eq. Guinea - 37 Years - 1979-'16
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Obiang's son, Teodoro Nguema Obiang, faces corruption charges in France.

Hosni Mubarak - 86

My aim was never to seek a force and take power." -Mubarak. Sentenced to three years in prison for embezzling public funds.

Egypt
Egypt - 30 Years - 1981-'11
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Muammar Gaddafi - 69*

I am an international leader, the dean of the Arab rulers, the king of kings of Africa and the imam of Muslims, and my international status does not allow me to descend to a lower level." Gaddafi.

Libya
Libya - 42 Years - 1969-'11
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Former Libyan leader Muammar Gaddafi came to power in a coup in 1969 and ruled Libya until he was overthrown and killed in 2011.

At the time of his capture in 2011, Gaddafi reportedly controlled $200 billion in assets.

Following the insurrection that led to the collapse of his regime, nearly $70 billion in cash and assets belonging to Gaddafi and his associates was recovered in foreign banks.

Asset Profile: Gaddafi owned billions in European banks, an Airbus A340 jet and shares in leading Italian football team Juventus.

Sources: Al Jazeera, The Sunday Times.

Mobutu Sese Seko - 66*

If you want to steal, steal a little in a nice way. But if you steal too much to become rich overnight, you'll be caught." Mobutu"

Congo DRC
Zaire - 33 Years - 1965-'97
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Omar Al Bashir - 72

"They will issue their decision tomorrow, and we are telling them to immerse it in water and drink it." Bashir, dismissing ICC indictment. Source: AP.

Sudan
Sudan - 26 Years - 1989-'16
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In 2013, Bashir failed to attend the UN General Assembly in New York after the ICC asked the U.S. to enforce a warrant of arrest. Bashir fled from South Africa in 2015.

Charles Taylor - 67

Jesus Christ was accused of being a murderer in his time” -Taylor. He is serving 50 years in prison for war crimes, crimes against humanity, and other serious violations of international law .

Liberia
Liberia - 6 Years - 1997-06
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Jacob Zuma - 73

I feel like the entire state machinery is against me." -Zuma, before he became president. Zuma has refused to repay $22 million in public funds spent on his private mansion.

South Africa
South Africa - 7 Yrs - 2009-16
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A report by auditing firm KPMG shows President Jacob Zuma's assets.

Ben Ali - 78

We are ready to face trial in our country if it is fair and without excess or favour ... For the present, there is nothing but hatred and vengeance. -Ben Ali. Exiled to Saudi Arabia.

Tunisia
Tunisia - 23 Years - 1987-'11
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Zine El Abidine Ben Ali is credited with instituting economic reforms that tripped Tunisia's per capita GDP. In the process, he issued 22 presidential decrees that favored his family business, leaving 21 percent of the country's private sector profits in the hands of his immediate family members. Ben Ali fled into exile in Saudi Arabia following
a mass uprising in 2011. At the time of his ouster, Ben Ali is believed to have controlled at least $13 billion in assets. The assets included 550 properties, 48 boats and yachts, 40 stock portfolios, 367 bank accounts and at least 400 enterprises. Switzerland froze $67 million in assets held by Ben Ali and close family members in 2011.

Johnson-Sirleaf - 78

Women work harder. And women are more honest; they have less reasons to be corrupt." New York Times - An Uncompromising Woman.

Liberia
Liberia - 10 Yrs - 2006-16
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Sirleaf was elected president of Liberia in a poll that marked the end of a bloody civil war.