NEW DELHI: Emerging markets are performing much better than the developed world, but in the wake of economic revival, issues like inflation and fiscal stimulus withdrawal will have to be managed very carefully, Principal Economic Adviser to the Finance Ministry Sanjeev Sanyal said on Friday. He also said that G20 in many ways kept the world going during the pandemic phase and many countries in the world will see a significant revival in GDP growth in the next few months. Addressing virtually an event organised by the Research and Information System for Developing Countries, Sanyal also stressed on the need to have a more fluid and flexible credit rating system.