NEW DELHI: Congress president Sonia Gandhi has set up three separate committees for discussing policy issues related to economic affairs, foreign affairs and national security, with former prime minister Manmohan Singh part of all the three panels.While former finance minister P Chidambaram, and party leaders Mallikarjun Kharge and Digvijaya Singh will be part of the economic affairs committee, Jairam Ramesh will be its convener.