US-China business: the necessary reinvention of Huawei

Can it revitalize its strategy? Sanctions by the US restricting the use of Huawei equipment and the selling of their products without an export license has begun to derail the company's traditional business. Kathrin Hille, Eleanor Olcott and James Kynge report on the telecoms group's ambition to become a tech pioneer as it rushes to boost alternative business in areas such as cloud services.