National security

It comes amid rising US concern over security risks posed by products made by foreign technology firms.

The revelation has led to concern in the country, which has a territorial dispute with China.

Officials say the ban, intended to protect "critical infrastructure", is a first for a sea port.

A senior intelligence employee under arrest is said to have had access to allies' information.

The government is looking into Advent's £4bn takeover bid for British defence firm Cobham.

Cameron Ortis, a civilian member of the RCMP, is charged with breach of security laws.