The key issue facing the B20 grouping is supply chain, especially after the Covid pandemic showed how issues in supply chain can disrupt economies, External Affairs Minister Dr S Jaishankar told NDTV in an exclusive interview. B20 is the official dialogue forum of G20 to engage with the global business community. "The key issue before B20 is the supply chain. Manufacturing is over-concentrated. The pandemic proved that a situation like this can disrupt economies," Dr Jaishankar said.