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Input: Ali Bongo will be sworn in as Gabon's president this week  succeeding his late father  after a top court upheld his victory in hotly disputed presidential polls.
 The oil- and timber-rich West African nation's Constitutional Court confirmed Bongo won the election prompted by the death of his father Omar Bongo Ondimba  who had ruled the country for 41 years.
 Chief Justice Marie Madeleine Mborantsuo confirmed Bongo as the poll winner with 41.79 percent of the ballot.
 Interim president Rose Francine Rogombe will formally hand over power to Bongo as part of the ceremony at the presidential palace in Libreville. The organisers have also planned a military parade and fireworks display.
 But the secretary general of Ali Bongo's Gabonese Democratic Party  Faustin Boukoubi  said he had "a feeling of full satisfaction."
 "Right and the law have prevailed " he said. "All Gabonese have a president who will get down to all the problems of the Gabonese people and make Gabon into an emerging country."
 If reaction to the court's ruling passes without incident  Ali Bongo still faces a difficult start to his presidency  observers say.
 However  according to an official of Mamboundou's UPG (Union of Gabonese People) party  the country's ethnic mix will severely test Bongo's ability to win consensus.
 "No-one is prepared to negotiate with him " said the official. Bongo  who comes from a minority ethnic group "will have lined up against him the Fang  the Punu  and Nzebis. The country is going to be ungovernable."

Bongo set to be sworn in this week after court backing