Dubai private-equity firm Abraaj Group is suing KPMG for at least $600 million over its role in the insolvency of the firm in what is the latest in a string of complaints of sloppy auditing made against the Big Four firm, Bloomberg reported. The claimants — two units of Abraaj which are now in liquidation — allege that KPMG accountants breached their duty of care when auditing the private-equity firm ...