The day before the U.S. was due to announce whether it would extend a licence for companies to work with Chinese telecoms business Huawei, President Donald Trump made his feelings clear: "Huawei is a company we may not do business with at all," he said Sunday night.
Trump has flip-flopped on Huawei several times, going from conciliatory to furious and back again, but these moves have had little or no impact on the trajectory of an intensifying U.S.-China technology rivalry.





