Representing over 40 per cent of the world's population, the leaders of five leading economies - Brazil, Russia, India, China and South Africa (BRICS)- will meet here tomorrow to discuss ways to enhance intra-BRICS trade and review the situation in the region. 

The leaders have been arriving since yesterday for the fourth Summit, which is themed 'BRICS Partnership for Global Stability, Security and Prosperity'. While Chinese President Hu Jintao arrived this afternoon, Russian President Dmitry Medvedev arrived early this morning.