Russia and China remain most acute threat to UK security, GCHQ chief says

Director Jeremy Fleming at an event to mark 100 years of the Government Communications Headquarters (GCHQ), at the National Memorial Arboretum in Alrewas, Staffordshire.
Director Jeremy Fleming at an event to mark 100 years of the Government Communications Headquarters (GCHQ), at the National Memorial Arboretum in Alrewas, Staffordshire.