Bhutto returned from eight years of self-imposed exile last month to campaign for a third term as prime minister.
The country's former dictator, Gaafar Numeiri, has already accepted the offer and was welcomed home from 14 years in exile last month.
Former Pakistani President and General Pervez Musharraf returned from exile last month in an attempt to win power again and rescue his struggling nation.
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The former general, who led Pakistan for nine years after seizing power in a military coup, returned to the country from self-imposed exile last month.
Bhutto -- who returned to Pakistan last month after several years in exile -- wants to lift her Pakistan People's Party to victory in January's parliamentary election in the hope she can have a third term as prime minister.
Sharif returned to Pakistan last month, ending seven years in exile in Saudi Arabia.
The 32-year-old half-back's man-of-the-match performance inspired Warrington to Challenge Cup glory over Leeds last month and now ends his Wales exile.
Nor will Sierra Leoneans wholeheartedly welcome the return of Ahmad Tejan Kabbah, their elected president, who has lived in exile in Guinea since a coup last May.
Bhutto returned to Pakistan last week after eight years in self-imposed exile.
It was the latest setback for Musharraf, who returned to Pakistan last month from four years in self-imposed exile to make a political comeback but is currently under house arrest in connection with a different case.
Jean-Marie Messier Jean-Marie Messier , former chief executive of media giant Vivendi Universal who was tossed into the Paris gutters last month, is nursing his wounds in a holiday exile by the Mediterranean, there to write a book about his downfall, Le Parisien reported on Friday.
Last month Mr Musharraf returned from years of self-imposed exile hoping to lead his All Pakistan Muslim League (APML) party into the general election next month.
And when Shia authorities in Iraq issued a fatwa last year urging Muslims to defend the country against aggressors, scholars in exile were quick to dismiss the ruling as having been forced under duress.
U.S. officials say Saudi exile Osama bin Laden and his al Qaeda organization are the prime suspects in last week's attacks that may have killed more than 5, 000 people -- including a Pentagon civilian worker who died Tuesday of injuries suffered when a hijacked jetliner crashed into the building.
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