Rapper MIA has fired a new legal salvo in her child custody battle with Benjamin Bronfman, son of Seagram heir Edgar Bronfman Jr. Brooklyn-based MIA is trying to use international law to secure the right to take their son back to her native England. She filed her latest bid under the Hague Convention, an international treaty that focuses on child custody. MIA had asked a Brooklyn federal court judge to call the case “Anonymous v. Anonymous.” That was rejected by Judge Margo Brodie, who ruled their dispute should be heard in the open in the public interest. MIA took a different position on her privacy recently when she tweeted, “Ben you cant take my son away from me.”