The Chinese city of Shenzhen, home to 17 million people, has imposed a seven-day lockdown following a spike in coronavirus cases across China and neighbouring Hong Kong. The fresh restrictions in China’s third largest city threatens already precarious global supply chains. Why is that the case? And what impact might this have on the rest of the world? Here’s what you need to know.
A new, annual international gathering is taking place this year at King’s College London