They say a good supply chain is one you never talk about because it just works. However, it's become a household phrase during the pandemic. WTO Chief Economist Robert Koopman provides a big picture view of how we got here and what the next wave of disruptions could look like. With soundbites from Director-General Ngozi Okonjo-Iweala, Bud Darr of MSC, and Matthias Maedge of the International Road Transport Union.