Zimbabwe's opposition party on Friday challenged results that say its leader, Morgan Tsvangirai, has won the first round of the presidential election with 47.9 percent of the vote -- but not enough to avoid a runoff against President Robert Mugabe.

Voting in one of Iran's most heated presidential elections ended in a near tie between the country's top moderate candidate and former president Ali Akbar Hashemi Rafsanjani and his conservative opponent Tehran Mayor Mahmoud Ahmadinejad.

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