Congress think tank will meet tomorrow at Surajkund in Haryana to discuss economic and political situation in the country. Briefing reporters in New Delhi today, Party Genereal Secretary Janardan Diwidi said apart from economic and political situation, implementation of party manifesto will be revieved in the day-long meeting. Congress President Sonia Gandhi will give her opening remarks on political matters followed by discussion on the political situation. The Prime minister Dr Manmohan Singh will speak on economic challenges. Besides this, Finance minister P Chidambaram will initiate a discussion on the economic situation.