Beneath the surface of the world’s oceans lies an infrastructure so essential, modern life would stall without it – yet so invisible it rarely enters public debate. Submarine cables, slender fibre-optic systems laid across the seabed, carry over 95 per cent of global internet traffic, transmitting the data that underpins financial markets, diplomatic exchanges and everyday communication. What appears to be neutral infrastructure is, in fact, a deeply political system – one that exposes a...