A controversy has erupted in India after US President Donald Trump called India's air ‘filthy’ along with China and Russia, during the last presidential debate. After this, people on social media started questioning Trump and Modi's 'friendship'. However, World Economic Forum’s report shows that India's air is really bad. Recently released WEF report states that six of the world's top 10 most polluted cities are in India. The report also said that overall, air pollution was the leading cause of death among all health risks