IT threats

Trump declares emergency over IT threats

The president signed an executive order effectively barring US companies from using foreign telecoms believed to pose a security risk to the country.

Mr Trump does not name any company specifically in the order.

However, analysts suggest it is mainly directed at Chinese telecommunications giant Huawei.

A number of countries have raised concerns the company's products could be used by China for surveillance.

The Chinese company - which is the world's largest maker of telecoms equipment - has denied that its work poses any risks of espionage or sabotage.