Iran warned last week that submarine cables in the Strait of Hormuz were a vulnerable point for the region’s digital economy, raising concerns about potential attacks on critical infrastructure. The narrow waterway, already a chokepoint for global oil shipments, is equally vital for the digital world. Several fibre-optic cables snake across the seabed of the strait, connecting countries from Southeast Asia to Europe via the Gulf states and Egypt. What makes undersea cables important? Subsea c...