Shedding his reputation as a carefree playboy took Nat Rothschild a decade of dealmaking. Gaining one for peppery imprudence took only a few hours. In a spectacular public spat, Mr Rothschild (part of a family which owns a stake in this newspaper) swapped insults on Twitter, a microblogging service, with his former business partner, Aga Bakrie, marking the end of a troubled investment in Indonesian commodities.
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