NEW YORK: A U.S. judge on Monday said that General Motors Co may be liable for punitive damages in lawsuits it faces over an ignition switch problem that prompted the recall of millions of vehicles last year. The decision from U.S. Bankruptcy Judge Robert Gerber in Manhattan could increase GM's financial exposure to claims for injuries, deaths or loss of vehicle value stemming from the 2014 recall. Unlike compensatory damages, which are meant to make up for plaintiffs' losses, punitive damages are designed to punish defendants for egregious or negligent conduct, and to deter future misbehavior. Gerber said, however, post-bankruptcy...