As the trial of Pakistani-Canadian Tahawwur Hussain Rana began in a Chicago court, the United States has asked Pakistan to respond to its questions with regard to the 26/11 Mumbai terror attack. Disclosing this to reporters in Washington State Department spokesman Mark Toner, however, refrained from giving any further details citing it as a legal matter and the court proceedings were ongoing. He said, speaking globally about the Mumbai attacks, US has asked all parties to answer questions that have been raised after the incident.