WARREN E.BUF-fett and Maurice "Hank" Green-berg have styles as different as an ele-phant and a lion.Buffett is known for his down-home,revival-style shareholder meetings and folksy musings.The imperious Greenberg is far more secretive yet blunt.Now,with probes into a questionable reinsurance deal between Greenberg's American International Group Inc.and Buffett's General Re Corp.insurance subsidiary moving into high gear,those differences are coming into full view.
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