Undersea cables: The hidden fault line in global finance

Iran has reportedly developed plans to target undersea communications cables in the Persian Gulf if the US and Israel renew military strikes, according to Reuters on 23 October 2026, with officials indicating repairs could be obstructed to prolong disruption. These reported threats highlight that infrastructure carrying financial instructions is becoming a geopolitical tool, with vulnerabilities extending beyond the Strait of Hormuz to Europe-Asia routes via the Red Sea and Egypt's Suez corridor. Systemic risk emerges when rerouting fails to preserve economic relationships, as cable landing stations create single points of failure. Modern finance depends on physical fibre-optic networks, yet redundancy may conceal shared dependencies, leaving institutions collectively exposed. Britain proposed legislation on 22 October to protect critical undersea infrastructure, while India should incentivize independent subsea routes and assess landing-station concentration, as the crisis could begin with a breakdown in coordination rather than insolvency.