New Delhi, Nov. 24 -- Satyam Bhatnagar runs a handicrafts shop in Paharganj's main bazar, a backpackers' paradise that boasts of hundreds of touristy establishments such as money changers, hotels, rooftop restaurants, tour operators, and handicrafts shops selling a range of stone and wood sculptures, puppets and magnets featuring Delhi monuments. His shop, Bhatnagar says, always saw a steady stream of foreign tourists before the Covid-19 pandemic hit in March. "But in the past seven months, I have not seen a single foreigner in the market which once teemed with tourists from all over the world at any hour of the day. Our sales are almost down to zero," he says....