Emmerson Mnangagwa Emmerson Mnangagwa

Emmerson Mnangagwa looks on during his official inauguration ceremony as the President of Zimbabwe at the National Sports Stadium in the capital Harare. Jekesai Njikizana /AFP/Getty Images hide caption

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Jekesai Njikizana /AFP/Getty Images

Nelson Chamisa addresses a news conference earlier this month in the capital, Harare. On Friday, Chamisa's opposition Movement for Democratic Change filed a legal challenge of the presidential election won by his opponent, incumbent President Emmerson Mnangagwa. Jerome Delay/AP hide caption

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Jerome Delay/AP

President Emmerson Mnangagwa casts his ballot Monday at Sherwood Primary School in Kwekwe. Last year Mnangagwa's predecessor, Robert Mugabe, was ousted after ruling Zimbabwe for 37 years. Jekesai Njikizana/AFP/Getty Images hide caption

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Jekesai Njikizana/AFP/Getty Images

Zimbabwean police patrolled the streets of the capital, Harare, on Thursday. Police said six people died when army troops opened fire on protesters the day before. Tsvangirayi Mukwazhi/AP hide caption

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Tsvangirayi Mukwazhi/AP

Supporters of the Movement for Democratic Change, Zimbabwe's primary opposition party, protest against alleged fraud by the election authority and ruling party Wednesday in Harare. Luis Tato/AFP/Getty Images hide caption

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Luis Tato/AFP/Getty Images