The UK's most senior military officer has warned of a new threat posed by Russia to communications and internet cables that run under the sea.
Air Chief Marshal Sir Stuart Peach, the chief of the defence staff, said Britain and Nato needed to prioritise protecting the lines of communication.
He said it would "immediately and potentially catastrophically" hit the economy if they were cut or disrupted.
The cables criss-cross the seabed, connecting up countries and continents.
Source - BBC News