Could US subterranean warfare be a future threat to China’s military defences?

The United States could be developing underground warfare powers and China should guard against the potential threat to its national security, Chinese think tanks have warned.
As drones and precision-guided weapons increasingly dominate ground combat in conflicts, military theorists are exploring the strategic potential of subterranean space as a possible dimension of future warfare.
Palmer Luckey, founder of defence technology company Anduril, has promoted the concept of a “subterrene” – a…