Review: Ratan Naval Tata is the present Chairman of the Tata Group, India's largest conglomerate established by earlier generations of his family.He serves in senior capacities in various organisations in India and he is a member of the Prime Minister's Council on Trade and Industry.Ratan Tata's foreign affiliations include membership of the international advisory boards of the Mitsubishi Corporation, the American International Group, JP Morgan Chase and Booz Allen Hamilton.