China’s Huawei poses such a grave security risk to the United Kingdom that the government must not allow it to have even a limited role in building 5G networks, a former head of Britain’s MI6 foreign spy service said on Thursday. In what some have compared to the Cold War arms race, the United States is worried that 5G dominance would give any global competitor such as China an advantage Washington is not ready to accept. The Trump administration, which hit Huawei with severe sanctions on Wednesday, has told allies not to use its technology because of fears it could be a vehicle for Chinese spying.
