By Andrea Hopkins and Cameron French TORONTO (Reuters) - As soon as Prem Watsa stepped down from Blackberry's board in August, speculation that he would launch a bid for the troubled smartphone maker started to swirl. Six weeks later, the man some call Canada's Warren Buffett has delivered, beginning a rescue project he once said could take four or five years. Just over a year ago, Watsa said BlackBerry was a "Canadian success story," a good buy and a likely turnaround story even though its market share was tumbling. ...



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