Former PM V.P. Singh has thrown his support behind the WTO Virodhi Bharatiya Jan Abhiyan or Indian People’s Campaign Against WTO, a non-BJP, non-Congress platform of political parties and organisations against WTO policies and the Government’s sell-out to the organisation.‘‘This Government can no longer hide behind a purdah. We have to know what trade agreements have been signed with developing nations, the Government must bring out a white paper,’’ Singh said.