Amid the raging second wave of coronavirus in India, the political war of words out between the non-BJP rule state and central government. The shortage of oxygen supply occurs in several states amid surges in Covid cases. Following a surge in the number of Covid-19 cases, the Railways planning to run Oxygen Express trains over the next few days to transport liquid medical oxygen and oxygen cylinders across the country. Why politics started over the oxygen cylinder crisis. Watch Dangal.