Huawei has been under attack from America for over a decade. In 2012 the American authorities began claiming that China might use the firm for espionage. Another broadside was the indictment of the firm’s cfo (and Mr Ren’s daughter) in 2018 for violating sanctions on Iran. With most American firms barred from doing business with Huawei and foreign firms barred from selling it chips or other gear that use American technology. America also sought to dissuade other countries from using Huawei’s equipment in their mobile-phone networks. Has the fight failed ?