A pandemic, incursions by an aggressive China and a rollercoaster market - 2020 saw all this and more. As we get ready to step into the new year, ET editors Bodhisatva Ganguli, Pranab Dhal Samanta and Sriram Ramakrishnan break down the biggest news developments of 2020 and what 2021 might hold for the economy, the political landscape and the markets.