Britain faces a crucial choice on Tuesday over whether to allow China’s Huawei Technologies to build its next-generation wireless networks.

The decision has implications for the country’s diplomatic relations with the United States, which is pushing allies to shun the Chinese company over cybersecurity concerns.

And Britain’s choice will feed into a wider battle between the U.S. and China over technological supremacy that has seen the world’s two biggest economies engage in a damaging trade war.