A judge Monday overturned Mayor Bloomberg's controversial ban on large sugary soda, one day before the regulation was to take effect. Manhattan Supreme Court Justice Milton Tingling Jr. declared the ban “arbitrary and capricious,” agreeing with several soda and business groups that had challenged the prohibition in court. The ruling was a stinging setback for the mayor, whose administration enacted the regulation in the face of criticism that he was turning the city into a “nanny state.” The Bloomberg-backed city Board of Health approved the regulation last year, calling it a crucial tool to attack obesity. The rule forbid restaurants...