Washington has revoked the US licence of one of China's biggest telecoms companies citing "national security" concerns.

China Telecom, which has provided telecoms services in the US for nearly 20 years, called the decision "disappointing".

China Telecom is one of three companies that dominate China's telecoms market.

The Federal Communication Commission (FCC) warned it might shut down China Telecom Americas in April 2020, claiming the firm "is subject to exploitation, influence, and control by the Chinese government".

The FCC revoked China Mobile's US licence in 2019, and is in process of doing so for two other state-backed firms - China Unicom Americas and Pacific Networks.

In all cases, US officials cited risks that the Chinese government could use the companies to spy on America or harm national interests.

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3US revokes licence of top Chinese telecoms company