The Prime Minister, Dr. Manmohan Singh at the fourth Plenary Session of the UN Conference on Sustainable Development (Rio+20), at Rio de Janeiro, Brazil on June 21, 2012. The Minister of State (Independent Charge) for Environment and Forests, Jayanthi Natarajan, the Advisor to Prime Minister, T.K.A. Nair and the National Security Advisor, Shivshankar Menon are also seen.