China’s new deep-sea cable cutter, capable of severing critical undersea communication and power cables 13,000 feet below the surface, has the potential to turn out the lights and plunge the world into chaos, it has been claimed. Developed by the China Ship Scientific Research Centre (CSSRC) and its State Key Laboratory of Deep-sea Manned Vehicles, this compact device is understood to target the steel-reinforced cables that carry 95% of global data transmission.